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Recognised as Colour

#81B0A9

  • #81B0A9
  • Cyan
  • Dark
  • Nearest: Cadetblue

#81B0A9 is a cyan with RGB values 129, 176, 169 and HSL 171°, 23%, 60%. It is a dark colour, so black text on it reaches 8.7:1 contrast (AAA for normal text). The nearest named colour is Cadetblue.

Colour values

#81B0A9#81B0A9
HEX#81B0A9
RGBrgb(129, 176, 169)
RGB (0–1)0.5059, 0.6902, 0.6627
RGB percentages50.6%, 69%, 66.3%
HSLhsl(171.1, 22.9%, 59.8%)
HSV / HSBhsv(171.1, 26.7%, 69%)
CMYK26.7%, 0%, 4%, 31%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,499,369
CSS custom property--colour: #81B0A9;

Brightness & contrast

Relative luminance0.38582WCAG 2.x, 0 is black and 1 is white
Perceived brightness162.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.72:1
Contrast with white2.41:1WCAG normal text: Fail
Contrast with black8.72:1WCAG normal text: AAA
Greyscale equivalent#A6A6A6
Inverted#7E4F56

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#ABABA9no red cones; affects about 1% of men; ΔE 17 from the original
Deuteranopia#A3A4AAno green cones; the most common form, about 1% of men; ΔE 18 from the original
Tritanopia#73B2AEno blue cones; rare, and affects men and women equally; ΔE 4.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.41:1WCAG large text: Fail
Contrast with black, large text8.72:1WCAG large text: AAA

Named colours

Cadetblue · ΔE 9.8Dark grey · ΔE 17.2Powder blue · ΔE 19.1Light blue · ΔE 19.4Silver · ΔE 19.5Dark seagreen · ΔE 21
Nearest named CSS colourCadetblue (#5F9EA0)ΔE 9.75, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B08188
Analogous#81B091, #81A0B0
Triadic#A981B0, #B0A981
Split complementary#B081A0, #B09181
Tetradic#9181B0, #B08188, #A0B081

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FEFFFF
Lighter +30%#DFEBE9
Lighter +20%#C0D7D4
Lighter +10%#A0C4BE
Darker −10%#629C93
Darker −20%#4E7D76
Darker −30%#3B5D58
Darker −40%#273E3B
More saturated +25%#67CABB
Less saturated −25%#999999

Channel breakdown

R129
G176
B169
Red129 (50.6%)
Green176 (69%)
Blue169 (66.3%)
Hue171.06°
Saturation (HSL)22.93%
Lightness59.8%
Dominant channelGreen
Hex per channelR 81 · G B0 · B A9

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Every value on this page was computed from “81b0a9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.