Encycolorpedia

#817a77 Hex-Farbcode

#817a77 Paint ChipDer hexadezimale Farbcode #817a77 ist ein Farbton von Rot-orange. Im RGB-Farbmodell enthält #817a77 50.59% Rot, 47.84% Grün und 46.67% Blau. Im HSL-Farbraum hat #817a77 einen Farbtonwinkel von 18° (Grad), 4% Sättigung und 49% Helligkeit. Diese Farbe hat eine ungefähre Wellenlänge von 587.24 nm.

Farbvariationen

Benannte Farben

Farbschemas

Herunterladen: GIMP GPL Adobe ASE (Adobe Swatch Exchange) Sketch Palette

Monochrome Farben

  1. #6a6361
  2. #726b68
  3. #79726f
  4. #817a77
  5. #89827f
  6. #918986
  7. #99918e

Farbtöne und Schattierungen

#817a77 nach Weiß

  1. #817a77
  2. #958f8c
  3. #a9a4a2
  4. #bebab9
  5. #d3d1d0
  6. #e9e8e7
  7. #ffffff / #fff

#817a77 nach Schwarz

  1. #817a77
  2. #6a6562
  3. #55504e
  4. #403d3b
  5. #2c2a29
  6. #191918
  7. #000000 / #000

Farben

Ähnliche Farben

  1. Pantone / PMS

    1. ★ P 172-7 U
      #807a78
      ΔE = 0.635 / LRV ≈ 19.9%
    2. ★ P 179-10 U
      #7b7976
      ΔE = 2.043 / LRV ≈ 19.2%
  2. Teknos

    1. ★ GBI081
      #807875
      ΔE = 0.795 / LRV ≈ 19.3%
    2. GBI154
      #7c6e6b
      ΔE = 4.911 / LRV ≈ 16.5%
  3. Little Greene

    1. ★ Spark's Grey
      #7e7976
      ΔE = 0.931 / LRV ≈ 19.4%
  4. Nerolac

    1. ★ Storm - 2880
      #837a78
      ΔE = 0.951 / LRV ≈ 20.1%
    2. Rockslide - 2957
      #7d7f7d
      ΔE = 3.650 / LRV ≈ 21.0%
  5. Caparol

    1. ★ 58 6 70 / Onyx 40
      #847c78
      ΔE = 1.052 / LRV ≈ 20.7%
    2. 1451
      #7c7470
      ΔE = 2.407 / LRV ≈ 17.9%
  6. Tollens

    1. ★ T2151-6
      #837d7a
      ΔE = 1.156 / LRV ≈ 20.9%
    2. ★ T2156-6
      #807a73
      ΔE = 2.170 / LRV ≈ 19.7%
  7. Peintures MF

    1. ★ Ciel menaçant
      #837975
      ΔE = 1.218 / LRV ≈ 19.8%
    2. ★ Mauve moka
      #827775
      ΔE = 1.779 / LRV ≈ 19.2%
  8. Brillux

    1. ★ 18.06.21
      #827875
      ΔE = 1.227 / LRV ≈ 19.5%
    2. ★ 12.03.21
      #817e79
      ΔE = 2.232 / LRV ≈ 21.0%
  9. Sto

    1. ★ 33131
      #827876
      ΔE = 1.344 / LRV ≈ 19.5%
    2. 34132
      #848084
      ΔE = 4.626 / LRV ≈ 22.0%
  10. PPG Pittsburgh Paints

    1. ★ Cool Charcoal / PPG1007-6
      #807b76
      ΔE = 1.349 / LRV ≈ 20.1%
    2. Pewter Mug / PPG1004-5
      #8b8283
      ΔE = 4.125 / LRV ≈ 23.1%
  11. Behr

    1. ★ Greyhound PPU24-21
      #807c78
      ΔE = 1.370 / LRV ≈ 20.4%
    2. Kindling N200-6
      #7a7069
      ΔE = 4.509 / LRV ≈ 16.7%
  12. Devoe Paint

    1. ★ Wet Granite / 30RR 22/031
      #857d7b
      ΔE = 1.457 / LRV ≈ 21.1%
    2. Grimmy's Grey / 00NN 20/000
      #797773
      ΔE = 2.588 / LRV ≈ 18.5%
  13. Model Master

    1. ★ Model Master 2712
      #7f7b7a
      ΔE = 1.499 / LRV ≈ 20.1%
  14. Dulux Australia

    1. ★ Exposed Elements / D13
      #827a74
      ΔE = 1.609 / LRV ≈ 19.9%
    2. Steel Shimmer / E22
      #78766e
      ΔE = 3.974 / LRV ≈ 18.1%
  15. Valspar Paint

    1. ★ Rugged Suede
      #837874
      ΔE = 1.622 / LRV ≈ 19.5%
    2. Vintage Boots R11E
      #79716d
      ΔE = 3.576 / LRV ≈ 17.0%
  16. Magnolia Home

    1. ★ Nesting Box / JG-120
      #7e7a75
      ΔE = 1.632 / LRV ≈ 19.6%
    2. ★ Wooden Palette / JG-130
      #857f7c
      ΔE = 1.916 / LRV ≈ 21.6%
  17. Dulux

    1. ★ Cinder Block / 30YY 20/029
      #7d7974
      ΔE = 1.753 / LRV ≈ 19.3%
    2. 28GG 22/002
      #7d7d7c
      ΔE = 2.800 / LRV ≈ 20.5%
  18. Alcro

    1. ★ Gradis
      #7e7c79
      ΔE = 1.903 / LRV ≈ 20.2%
    2. Titan Metallic
      #8d847e
      ΔE = 4.341 / LRV ≈ 23.7%
  19. CIL

    1. ★ Mansard Stone
      #7f7c77
      ΔE = 1.940 / LRV ≈ 20.3%
    2. Smokey Glass
      #887d78
      ΔE = 2.301 / LRV ≈ 21.3%
  20. Natural Color System / NCS

    1. ★ S 4500-N
      #867f7b
      ΔE = 2.007 / LRV ≈ 21.7%
    2. S 4502-B
      #7f7d7d
      ΔE = 2.503 / LRV ≈ 20.7%
  21. General Paint

    1. ★ Vault / CL 3255D
      #867d77
      ΔE = 2.125 / LRV ≈ 21.1%
    2. Sawback / CL 3195D
      #827f80
      ΔE = 3.116 / LRV ≈ 21.5%
  22. Flügger

    1. ★ Stormgrå (U-732)
      #7d7973
      ΔE = 2.140 / LRV ≈ 19.3%
    2. Villagrå (U-768)
      #7e7a71
      ΔE = 3.418 / LRV ≈ 19.5%
  23. Bristol

    1. ★ Zodiac Grey / P237-N6
      #847877
      ΔE = 2.170 / LRV ≈ 19.7%
    2. Fauna / P238-N6
      #7e6f6b
      ΔE = 4.781 / LRV ≈ 16.9%
  24. Taubmans

    1. ★ Zodiac Grey / T12 35.F12
      #847877
      ΔE = 2.170 / LRV ≈ 19.7%
    2. Gallagher / T08 166-3
      #807372
      ΔE = 3.312 / LRV ≈ 18.1%
  25. GM / General Motors

    1. ★ Paddock Gray
      #887c79
      ΔE = 2.199 / LRV ≈ 21.0%
    2. Renfrew Gray
      #80787b
      ΔE = 3.365 / LRV ≈ 19.5%
  26. Opaltone / OMS

    1. ★ 4439
      #80797a
      ΔE = 2.215 / LRV ≈ 19.7%
    2. 5439
      #7f817f
      ΔE = 3.981 / LRV ≈ 21.7%
  27. Sigma

    1. ★ Warm Red / 6326 B
      #7b7671
      ΔE = 2.259 / LRV ≈ 18.4%
    2. Sienna Brown / S 6005-Y80R
      #7b756f
      ΔE = 2.722 / LRV ≈ 18.1%
  28. Wattyl

    1. ★ Thunderbolt / A27W
      #807b74
      ΔE = 2.278 / LRV ≈ 20.0%
    2. Morpheus / A50W
      #7e7b7e
      ΔE = 3.634 / LRV ≈ 20.1%
  29. Diamond Vogel

    1. Ocean Frigate / 0555
      #817c7d
      ΔE = 2.406 / LRV ≈ 20.6%
    2. Vigilant / 0563
      #867f74
      ΔE = 4.481 / LRV ≈ 21.5%
  30. Colortrend

    1. 0555
      #817c7d
      ΔE = 2.406 / LRV ≈ 20.6%
    2. 0549
      #7a7473
      ΔE = 2.657 / LRV ≈ 17.9%
  31. Albany Paint

    1. Martello Tower
      #847f79
      ΔE = 2.472 / LRV ≈ 21.5%
  32. Toyo Ink

    1. CF10817
      #837672
      ΔE = 2.518 / LRV ≈ 19.0%
    2. CF10818
      #80746a
      ΔE = 4.616 / LRV ≈ 18.1%
  33. Resene

    1. Eighth Felix BR61-011-034
      #897c79
      ΔE = 2.555 / LRV ≈ 21.1%
    2. Ricochet M66-001-236
      #848484
      ΔE = 4.471 / LRV ≈ 23.1%
  34. Nippon Paint

    1. Amazing Touch / NP N 1924 D
      #7c7879
      ΔE = 2.598 / LRV ≈ 19.1%
    2. Leaping Gray / NP N 2039 T
      #89867f
      ΔE = 4.994 / LRV ≈ 23.9%
  35. Duron

    1. Gauntlet Gray
      #797471
      ΔE = 2.655 / LRV ≈ 17.7%
    2. Attitude Gray
      #7f817c
      ΔE = 4.124 / LRV ≈ 21.7%
  36. Clark+Kensington

    1. Spanish Parador / N-C31
      #887a78
      ΔE = 2.707 / LRV ≈ 20.5%
    2. Charcoal Cashmere / N-C14
      #777673
      ΔE = 3.085 / LRV ≈ 18.1%
  37. Dutch Boy

    1. Timbermine
      #7c7871
      ΔE = 2.718 / LRV ≈ 18.9%
    2. À La Carte
      #88787c
      ΔE = 4.976 / LRV ≈ 20.1%
  38. Crown Diamond

    1. 7410-52 Inuit Grey
      #877f7f
      ΔE = 2.721 / LRV ≈ 21.9%
    2. 7401-52 Outline
      #868076
      ΔE = 4.202 / LRV ≈ 21.8%
  39. Sico

    1. 6181-52 Inuit Grey
      #877f7f
      ΔE = 2.721 / LRV ≈ 21.9%
    2. 6206-52 Outline
      #868076
      ΔE = 4.202 / LRV ≈ 21.8%
  40. ICI Paints

    1. Quaker Grey 30YY 25/026
      #83807b
      ΔE = 2.726 / LRV ≈ 21.7%
    2. Night Forest 50RB 21/020
      #787577
      ΔE = 3.803 / LRV ≈ 18.0%
  41. Kelly-Moore

    1. Cast in Stone / KM3822-3
      #787673
      ΔE = 2.750 / LRV ≈ 18.2%
    2. Eastlake Lavender / HL 4246-3
      #8c7f7b
      ΔE = 3.319 / LRV ≈ 22.2%
  42. Coronado Paint

    1. 8295 - Cast In Stone
      #807f7e
      ΔE = 2.808 / LRV ≈ 21.3%
    2. 8304 - Grey Matters
      #7e807f
      ΔE = 3.889 / LRV ≈ 21.4%
  43. Dupont

    1. CAS789
      #827574
      ΔE = 2.845 / LRV ≈ 18.7%
    2. CAS821
      #7c766d
      ΔE = 3.690 / LRV ≈ 18.3%
  44. Rodda Paint

    1. Fieldstone H146
      #7c7b75
      ΔE = 2.863 / LRV ≈ 19.7%
  45. AMC

    1. Dark Driftwood
      #827870
      ΔE = 2.897 / LRV ≈ 19.3%
    2. Canterbury Gray Light
      #7d7a72
      ΔE = 3.139 / LRV ≈ 19.5%
  46. KILZ

    1. Smokey Eyes / H871
      #7f7d76
      ΔE = 2.978 / LRV ≈ 20.5%
  47. Sherwin-Williams

    1. Sensuous Gray - 7081
      #837d7f
      ΔE = 3.033 / LRV ≈ 21.0%
    2. Special Gray - 6277
      #7b787d
      ΔE = 4.773 / LRV ≈ 19.1%
  48. Chrysler

    1. Anniversary Silver
      #777673
      ΔE = 3.085 / LRV ≈ 18.1%
    2. Luna Gray
      #76766d
      ΔE = 4.847 / LRV ≈ 17.9%
  49. Evonik-Degussa

    1. 563
      #81807b
      ΔE = 3.128 / LRV ≈ 21.5%
    2. 4194T Outpost Gray
      #8a8180
      ΔE = 3.256 / LRV ≈ 22.7%
  50. Volkswagen

    1. Melange Beige
      #87827d
      ΔE = 3.200 / LRV ≈ 22.6%
    2. Polar Gray
      #808080
      ΔE = 3.434 / LRV ≈ 21.6%
  51. Focoltone

    1. 5011
      #847572
      ΔE = 3.225 / LRV ≈ 18.8%
    2. 6056
      #818084
      ΔE = 4.914 / LRV ≈ 21.8%
  52. California Paints

    1. DE 6369 - Legendary Gray
      #787976
      ΔE = 3.233 / LRV ≈ 19.0%
    2. DE 6061 - River Rocks
      #897870
      ΔE = 4.528 / LRV ≈ 19.9%
  53. Dunn-Edwards

    1. Legendary Gray / 488
      #787976
      ΔE = 3.233 / LRV ≈ 19.0%
    2. Fallen Rock / 698
      #8e8583
      ΔE = 4.596 / LRV ≈ 24.2%
  54. Bentley

    1. Kensington Grey / 9561053
      #7b7c7c
      ΔE = 3.318 / LRV ≈ 20.1%
  55. British Standard

    1. BS 4800 06 A 07 - Grey
      #87827c
      ΔE = 3.388 / LRV ≈ 22.6%
    2. BS 4800 00 A 09 - Flint grey
      #838385
      ΔE = 4.851 / LRV ≈ 22.8%
  56. Pratt & Lambert

    1. Monumental 29-19
      #7f7a7d
      ΔE = 3.393 / LRV ≈ 19.9%
    2. Woodwitch 32-22
      #7e786e
      ΔE = 3.851 / LRV ≈ 19.0%
  57. Krylon

    1. Classic Gray
      #787974
      ΔE = 3.488 / LRV ≈ 18.9%
    2. Greek Stone
      #857f73
      ΔE = 4.942 / LRV ≈ 21.4%
  58. Levis

    1. Mild Grey
      #87837e
      ΔE = 3.587 / LRV ≈ 22.9%
    2. Mild Taupe
      #8c8382
      ΔE = 3.980 / LRV ≈ 23.4%
  59. RAL

    1. RAL 7036 / Platinum grey
      #7f7679
      ΔE = 3.600 / LRV ≈ 18.8%
    2. RAL 7037 / Dusty grey
      #7d7f7d
      ΔE = 3.650 / LRV ≈ 21.0%
  60. Jotun

    1. 2363 / Solid
      #81746d
      ΔE = 3.626 / LRV ≈ 18.3%
    2. 2500 / Krydder
      #8a7e74
      ΔE = 4.409 / LRV ≈ 21.6%
  61. New Look

    1. Jazz it up / G36-07
      #7e7b7e
      ΔE = 3.634 / LRV ≈ 20.1%
    2. Grand Impression / A01-04
      #888077
      ΔE = 3.854 / LRV ≈ 22.0%
  62. Olympic

    1. Pewter Mug D43-4
      #898182
      ΔE = 3.688 / LRV ≈ 22.6%
    2. Dover Gray D58-4
      #838483
      ΔE = 4.536 / LRV ≈ 23.0%
  63. Earthpaint

    1. 5-20-5 Fortress
      #7c7e79
      ΔE = 3.729 / LRV ≈ 20.6%
    2. 5-15-5 Elephant Walk
      #868278
      ΔE = 4.681 / LRV ≈ 22.4%
  64. Beckers

    1. Cyklon 515 / 5301-B28G
      #777879
      ΔE = 3.901 / LRV ≈ 18.7%
    2. Sisal 559 / S 5005-Y20R
      #858379
      ΔE = 5.066 / LRV ≈ 22.6%
  65. Audi

    1. Graphite Gray Metallic / 9Q9Q, LM7W
      #7a7d7c
      ΔE = 3.945 / LRV ≈ 20.3%
    2. Alpaka Beige Metallic / LF5B, LY1W, Y5, Y5PD, Y5Y5
      #7a7368
      ΔE = 5.168 / LRV ≈ 17.4%
  66. Pascol

    1. Storm Rider PV110
      #7a766d
      ΔE = 3.960 / LRV ≈ 18.2%
    2. April Change PC110
      #887677
      ΔE = 4.592 / LRV ≈ 19.5%
  67. Benjamin Moore

    1. Amherst Gray / HC-167
      #767771
      ΔE = 4.038 / LRV ≈ 18.2%
    2. Smoked Oyster / 2109-40
      #8f807a
      ΔE = 4.425 / LRV ≈ 22.7%
  68. Australian Standard AS2700

    1. N44 Bridge Grey
      #767778
      ΔE = 4.058 / LRV ≈ 18.4%
  69. Porter Paints

    1. Pewter Mug / 531-5
      #8b8283
      ΔE = 4.125 / LRV ≈ 23.1%
    2. Gravity / ATC-80
      #8d857f
      ΔE = 4.585 / LRV ≈ 24.0%
  70. Humbrol

    1. 156 Dark Camouflage Grey
      #78797b
      ΔE = 4.160 / LRV ≈ 19.1%
  71. Tikkurila

    1. 566X
      #777a7a
      ΔE = 4.173 / LRV ≈ 19.2%
    2. 4978
      #7e7a6f
      ΔE = 4.387 / LRV ≈ 19.5%
  72. Farrow & Ball

    1. Brassica / 271
      #787274
      ΔE = 4.184 / LRV ≈ 17.3%
  73. Vista Paint

    1. Cast in Stone
      #858483
      ΔE = 4.196 / LRV ≈ 23.1%
    2. Utopia
      #90817b
      ΔE = 4.691 / LRV ≈ 23.1%
  74. Berger

    1. Cast in Stone / 8295
      #858483
      ΔE = 4.196 / LRV ≈ 23.1%
    2. Rave Raisin / 8743
      #857271
      ΔE = 5.011 / LRV ≈ 18.2%
  75. Federal Standard

    1. Federal Standard 26134
      #74746f
      ΔE = 4.233 / LRV ≈ 17.4%
  76. Sikkens

    1. B1.05.45
      #877574
      ΔE = 4.305 / LRV ≈ 19.1%
    2. A0.05.45
      #837578
      ΔE = 4.305 / LRV ≈ 18.9%
  77. Ralph Lauren

    1. Mombasa Mist / RLTH237
      #76726b
      ΔE = 4.330 / LRV ≈ 16.9%
    2. Washboard / RLTH238
      #878683
      ΔE = 4.753 / LRV ≈ 23.8%
  78. Wanderer

    1. Firngrau / 434
      #74746e
      ΔE = 4.435 / LRV ≈ 17.3%
  79. Cloverdale Paint

    1. Burnished Pewter / 8327
      #75766f
      ΔE = 4.501 / LRV ≈ 17.9%
    2. Fair Fieldstone / 8470
      #7b7368
      ΔE = 5.121 / LRV ≈ 17.5%
  80. Graham & Brown

    1. Baked Clay
      #8d847d
      ΔE = 4.523 / LRV ≈ 23.6%
  81. Ford

    1. Light Fawn
      #858075
      ΔE = 4.658 / LRV ≈ 21.7%
    2. Arizona Beige
      #878784
      ΔE = 5.209 / LRV ≈ 24.1%
  82. Scib Paints

    1. Hidcote Manor / 8439
      #837b6f
      ΔE = 4.670 / LRV ≈ 20.1%
    2. Grey Matters / 8304
      #838584
      ΔE = 5.035 / LRV ≈ 23.3%
  83. Crayola

    1. Gray
      #8b8680
      ΔE = 4.780 / LRV ≈ 24.1%
  84. Mylands of London

    1. Greystone
      #7e786c
      ΔE = 4.847 / LRV ≈ 19.0%
    2. Dove Grey
      #888785
      ΔE = 5.125 / LRV ≈ 24.3%
  85. Asian Paints

    1. Shadow Dance / 8303
      #717271
      ΔE = 4.934 / LRV ≈ 16.7%
    2. Toasted Toffee / 8751
      #7f7068
      ΔE = 5.246 / LRV ≈ 17.1%
  86. Glidden

    1. Seal Grey / 00NN 25/000
      #868586
      ΔE = 4.947 / LRV ≈ 23.6%
    2. Dover Gray / PPG1001-5
      #848585
      ΔE = 4.971 / LRV ≈ 23.4%
  87. Games Workshop - Citadel

    1. Astrogranite
      #757679
      ΔE = 4.953 / LRV ≈ 18.1%
  88. Plascon

    1. Paddington Grey O4-E1-4
      #887470
      ΔE = 5.026 / LRV ≈ 18.9%
  89. Testors

    1. Testors 2538C
      #737877
      ΔE = 5.030 / LRV ≈ 18.4%
    2. Testors 1180
      #847e84
      ΔE = 5.245 / LRV ≈ 21.5%
  90. Fired Earth

    1. Pumblechook
      #8d857c
      ΔE = 5.231 / LRV ≈ 23.9%
  91. Homebase

    1. Mocha
      #8e7976
      ΔE = 5.232 / LRV ≈ 20.7%

#817a77 Beispiele für HTML und CSS

#817a77 Vordergrund

Aller Anfang ist schwer.

<p style="color: #817a77">…</p>

#817a77 Hintergrund

Wer A sagt, muss auch B sagen.

<p style="background-color: #817a77">…</p>

#817a77 Textschatten

Morgenstund hat Gold im Mund.

<p style="text-shadow: 0.1em 0.1em 0.15em #817a77">…</p>

Farbkompositionsdiagramme

Farbräume

Dezimalzahl
8485495
Binär
10000001, 01111010, 01110111
Hexadezimal
#817a77
LRV
≈ 19.9%
Naheste kurze Hexadezimalzahl
#877 ΔE = 3.631
RGB
rgb(129, 122, 119)
RGBA
rgba(129, 122, 119, 1.0)
RG-Chromatizität
r: 0.349, g: 0.330, b: 0.322
RYB
Rot: 50.588%, Gelb: 48.347%, Blau: 46.667%
Android / android.graphics.Color
-8291721 / 0xff817a77
HSL
hsl(18, 4%, 49%)
HSLA
hsla(18, 4%, 49%, 1.0)
HSV / HSB
Farbton: 18° (18.000), Sättigung: 8% (0.078), Wert: 51% (0.506)
HSP
Farbton: 18.000, Sättigung: 7.752%, wahrgenommene Helligkeit: 48.550%
HSLuv (HUSL)
H: 36.770, S: 6.447, L: 51.745
Cubehelix
H: 11.506, S: 0.057, L: 0.485
TSL
T: 3.580, S: 0.021, L: 0.485
CMYK
Cyan: 0% (0.000), Magenta: 5% (0.054), Gelb: 8% (0.078), Schwarzanteil Key: 49% (0.494)
CMY
Cyan: 49% (0.494), Magenta: 52% (0.522), Gelb: 53% (0.533)
XYZ
X: 19.342, Y: 19.918, Z: 20.275
xyY
x: 0.325, y: 0.335, Y: 19.918
CIELab
L: 51.745, a: 2.095, b: 2.593
CIELuv
L: 51.745, u: 4.259, v: 3.182
CIELCH / LCHab
L: 51.745, C: 3.334, H: 51.067
CIELUV / LCHuv
L: 51.745, C: 5.316, H: 36.770
Hunter-Lab
L: 44.630, a: -0.742, b: 4.306
CIECAM02
J: 41.526, C: 3.192, h: 47.257, Q: 126.961, M: 2.792, s: 14.828, H: 35.696
OSA-UCS
Leichtigkeit: -10.070, Gelb: 0.277, Grün: -0.193
LMS
L: 19.438, M: 20.326, S: 20.267
YCbCr
Y: 122.303, Cb: 125.647, Cr: 131.286
YCgCo
Y: 123.000, Cg: -1.000, Co: 34.750
YDbDr
Y: 123.751, Db: -7.149, Dr: -9.982
YPbPr
Y: 123.275, Pb: -2.305, Pr: 3.638
xvYCC
Y: 121.871, Cb: 125.975, Cr: 131.196
YIQ
Y: 123.751, I: 5.134, Q: 0.547
YUV
Y: 123.751, U: -2.337, V: 4.605
Munsell-Farbsystem
10R 5/1 ΔE = 2.217
Markenfarbe
Wii ΔE = 11.952

Zufällige Farben

Rot

Grün

Blau