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Recognised as Colour

#81CDFB

  • #81CDFB
  • Blue
  • Light
  • Nearest: Light skyblue

#81CDFB is a blue with RGB values 129, 205, 251 and HSL 203°, 94%, 75%. It is a light colour, so black text on it reaches 12.1:1 contrast (AAA for normal text). The nearest named colour is Light skyblue.

Colour values

#81CDFB#81CDFB
HEX#81CDFB
RGBrgb(129, 205, 251)
RGB (0–1)0.5059, 0.8039, 0.9843
RGB percentages50.6%, 80.4%, 98.4%
HSLhsl(202.6, 93.8%, 74.5%)
HSV / HSBhsv(202.6, 48.6%, 98.4%)
CMYK48.6%, 18.3%, 0%, 1.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,506,875
CSS custom property--colour: #81CDFB;

Brightness & contrast

Relative luminance0.55295WCAG 2.x, 0 is black and 1 is white
Perceived brightness191.9 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 12.06:1
Contrast with white1.74:1WCAG normal text: Fail
Contrast with black12.06:1WCAG normal text: AAA
Greyscale equivalent#C0C0C0
Inverted#7E3204

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B8CCFDno red cones; affects about 1% of men; ΔE 16 from the original
Deuteranopia#A7BEFAno green cones; the most common form, about 1% of men; ΔE 17.6 from the original
Tritanopia#43D9DCno blue cones; rare, and affects men and women equally; ΔE 30.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.74:1WCAG large text: Fail
Contrast with black, large text12.06:1WCAG large text: AAA

Named colours

Light skyblue · ΔE 1.6Sky blue · ΔE 9.2Deep skyblue · ΔE 15.6Light steelblue · ΔE 17.8Light blue · ΔE 18.9Powder blue · ΔE 23.1
Nearest named CSS colourLight skyblue (#87CEFA)ΔE 1.55, below the just-noticeable difference
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FBAF81
Analogous#81FBEC, #8190FB
Triadic#FB81CD, #CDFB81
Split complementary#FB8190, #FBEC81
Tetradic#EC81FB, #FBAF81, #90FB81

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#E4F4FE
Lighter +10%#B2E1FD
Darker −10%#50B9F9
Darker −20%#1EA6F8
Darker −30%#078CDC
Darker −40%#056CAB
More saturated +25%#7DCEFF
Less saturated −25%#91C9EB

Channel breakdown

R129
G205
B251
Red129 (50.6%)
Green205 (80.4%)
Blue251 (98.4%)
Hue202.62°
Saturation (HSL)93.85%
Lightness74.51%
Dominant channelBlue
Hex per channelR 81 · G CD · B FB

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