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Recognised as Colour

#81C4BB

  • #81C4BB
  • Cyan
  • Dark
  • Nearest: Cadetblue

#81C4BB is a cyan with RGB values 129, 196, 187 and HSL 172°, 36%, 64%. It is a dark colour, so black text on it reaches 10.5:1 contrast (AAA for normal text). The nearest named colour is Cadetblue.

Colour values

#81C4BB#81C4BB
HEX#81C4BB
RGBrgb(129, 196, 187)
RGB (0–1)0.5059, 0.7686, 0.7333
RGB percentages50.6%, 76.9%, 73.3%
HSLhsl(171.9, 36.2%, 63.7%)
HSV / HSBhsv(171.9, 34.2%, 76.9%)
CMYK34.2%, 0%, 4.6%, 23.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,504,507
CSS custom property--colour: #81C4BB;

Brightness & contrast

Relative luminance0.47735WCAG 2.x, 0 is black and 1 is white
Perceived brightness177.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.55:1
Contrast with white1.99:1WCAG normal text: Fail
Contrast with black10.55:1WCAG normal text: AAA
Greyscale equivalent#B5B5B5
Inverted#7E3B44

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#BEBDBBno red cones; affects about 1% of men; ΔE 23.5 from the original
Deuteranopia#B2B4BCno green cones; the most common form, about 1% of men; ΔE 24.2 from the original
Tritanopia#6AC7C1no blue cones; rare, and affects men and women equally; ΔE 6.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.99:1WCAG large text: Fail
Contrast with black, large text10.55:1WCAG large text: AAA

Named colours

Cadetblue · ΔE 14.9Medium turquoise · ΔE 15.6Powder blue · ΔE 15.7Pale turquoise · ΔE 16.4Light seagreen · ΔE 17.3Light blue · ΔE 17.9
Nearest named CSS colourCadetblue (#5F9EA0)ΔE 14.89, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C4818A
Analogous#81C49A, #81ACC4
Triadic#BB81C4, #C4BB81
Split complementary#C481AC, #C49A81
Tetradic#9981C4, #C4818A, #ACC481

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#E9F5F3
Lighter +20%#C6E5E0
Lighter +10%#A4D4CE
Darker −10%#5EB4A8
Darker −20%#47988D
Darker −30%#37756D
Darker −40%#27524D
More saturated +25%#6ADBCC
Less saturated −25%#98ADAA

Channel breakdown

R129
G196
B187
Red129 (50.6%)
Green196 (76.9%)
Blue187 (73.3%)
Hue171.94°
Saturation (HSL)36.22%
Lightness63.73%
Dominant channelGreen
Hex per channelR 81 · G C4 · B BB

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Every value on this page was computed from “81c4bb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.