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Recognised as Colour

#81AAA3

  • #81AAA3
  • Cyan
  • Dark
  • Nearest: Cadetblue

#81AAA3 is a cyan with RGB values 129, 170, 163 and HSL 170°, 19%, 59%. It is a dark colour, so black text on it reaches 8.2:1 contrast (AAA for normal text). The nearest named colour is Cadetblue.

Colour values

#81AAA3#81AAA3
HEX#81AAA3
RGBrgb(129, 170, 163)
RGB (0–1)0.5059, 0.6667, 0.6392
RGB percentages50.6%, 66.7%, 63.9%
HSLhsl(169.8, 19.4%, 58.6%)
HSV / HSBhsv(169.8, 24.1%, 66.7%)
CMYK24.1%, 0%, 4.1%, 33.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,497,827
CSS custom property--colour: #81AAA3;

Brightness & contrast

Relative luminance0.36061WCAG 2.x, 0 is black and 1 is white
Perceived brightness158 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.21:1
Contrast with white2.56:1WCAG normal text: Fail
Contrast with black8.21:1WCAG normal text: AAA
Greyscale equivalent#A1A1A1
Inverted#7E555C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A6A5A3no red cones; affects about 1% of men; ΔE 15.5 from the original
Deuteranopia#9EA0A4no green cones; the most common form, about 1% of men; ΔE 15.5 from the original
Tritanopia#75ACA8no blue cones; rare, and affects men and women equally; ΔE 4.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.56:1WCAG large text: Fail
Contrast with black, large text8.21:1WCAG large text: AAA

Named colours

Cadetblue · ΔE 9.5Dark grey · ΔE 15.6Silver · ΔE 19Light slate grey · ΔE 19.7Gray · ΔE 20.1Light blue · ΔE 20.7
Nearest named CSS colourCadetblue (#5F9EA0)ΔE 9.53, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AA8188
Analogous#81AA8E, #819DAA
Triadic#A381AA, #AAA381
Split complementary#AA819D, #AA8E81
Tetradic#8E81AA, #AA8188, #9DAA81

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FBFCFC
Lighter +30%#DCE8E6
Lighter +20%#BED3CF
Lighter +10%#9FBFB9
Darker −10%#64948C
Darker −20%#4F766F
Darker −30%#3B5752
Darker −40%#263936
More saturated +25%#67C4B4
Less saturated −25%#959595

Channel breakdown

R129
G170
B163
Red129 (50.6%)
Green170 (66.7%)
Blue163 (63.9%)
Hue169.76°
Saturation (HSL)19.43%
Lightness58.63%
Dominant channelGreen
Hex per channelR 81 · G AA · B A3

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Every value on this page was computed from “81aaa3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.