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Recognised as Colour

#81C2ED

  • #81C2ED
  • Blue
  • Dark
  • Nearest: Light skyblue

#81C2ED is a blue with RGB values 129, 194, 237 and HSL 204°, 75%, 72%. It is a dark colour, so black text on it reaches 10.9:1 contrast (AAA for normal text). The nearest named colour is Light skyblue.

Colour values

#81C2ED#81C2ED
HEX#81C2ED
RGBrgb(129, 194, 237)
RGB (0–1)0.5059, 0.7608, 0.9294
RGB percentages50.6%, 76.1%, 92.9%
HSLhsl(203.9, 75%, 71.8%)
HSV / HSBhsv(203.9, 45.6%, 92.9%)
CMYK45.6%, 18.1%, 0%, 7.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,504,045
CSS custom property--colour: #81C2ED;

Brightness & contrast

Relative luminance0.49365WCAG 2.x, 0 is black and 1 is white
Perceived brightness183 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.87:1
Contrast with white1.93:1WCAG normal text: Fail
Contrast with black10.87:1WCAG normal text: AAA
Greyscale equivalent#B7B7B7
Inverted#7E3D12

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#AFC1EFno red cones; affects about 1% of men; ΔE 13.9 from the original
Deuteranopia#A0B5ECno green cones; the most common form, about 1% of men; ΔE 15.1 from the original
Tritanopia#51CDD0no blue cones; rare, and affects men and women equally; ΔE 28.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.93:1WCAG large text: Fail
Contrast with black, large text10.87:1WCAG large text: AAA

Named colours

Light skyblue · ΔE 4.3Sky blue · ΔE 9.1Light steelblue · ΔE 15.2Deep skyblue · ΔE 17.2Light blue · ΔE 18.3Powder blue · ΔE 22.8
Nearest named CSS colourLight skyblue (#87CEFA)ΔE 4.33, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#EDAC81
Analogous#81EDE2, #818CED
Triadic#ED81C2, #C2ED81
Split complementary#ED818C, #EDE281
Tetradic#E281ED, #EDAC81, #8CED81

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#DAEDFA
Lighter +10%#AED8F3
Darker −10%#54ACE7
Darker −20%#2897E0
Darker −30%#1B7BBA
Darker −40%#145D8E
More saturated +25%#6FC6FF
Less saturated −25%#93BEDB

Channel breakdown

R129
G194
B237
Red129 (50.6%)
Green194 (76.1%)
Blue237 (92.9%)
Hue203.89°
Saturation (HSL)75%
Lightness71.76%
Dominant channelBlue
Hex per channelR 81 · G C2 · B ED

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Every value on this page was computed from “81c2ed” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.