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Recognised as Colour

#81CEFB

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

#81CEFB is a blue with RGB values 129, 206, 251 and HSL 202°, 94%, 75%. It is a light colour, so black text on it reaches 12.2:1 contrast (AAA for normal text). The nearest named colour is Light skyblue.

Colour values

#81CEFB#81CEFB
HEX#81CEFB
RGBrgb(129, 206, 251)
RGB (0–1)0.5059, 0.8078, 0.9843
RGB percentages50.6%, 80.8%, 98.4%
HSLhsl(202.1, 93.8%, 74.5%)
HSV / HSBhsv(202.1, 48.6%, 98.4%)
CMYK48.6%, 17.9%, 0%, 1.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,507,131
CSS custom property--colour: #81CEFB;

Brightness & contrast

Relative luminance0.55775WCAG 2.x, 0 is black and 1 is white
Perceived brightness192.5 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 12.15:1
Contrast with white1.73:1WCAG normal text: Fail
Contrast with black12.15:1WCAG normal text: AAA
Greyscale equivalent#C1C1C1
Inverted#7E3104

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B9CCFDno red cones; affects about 1% of men; ΔE 16.7 from the original
Deuteranopia#A8BFFAno green cones; the most common form, about 1% of men; ΔE 17.9 from the original
Tritanopia#43DADDno blue cones; rare, and affects men and women equally; ΔE 30.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.73:1WCAG large text: Fail
Contrast with black, large text12.15:1WCAG large text: AAA

Named colours

Light skyblue · ΔE 1.5Sky blue · ΔE 8.7Deep skyblue · ΔE 15.9Light steelblue · ΔE 17.8Light blue · ΔE 18.5Powder blue · ΔE 22.5
Nearest named CSS colourLight skyblue (#87CEFA)ΔE 1.46, below the just-noticeable difference
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FBAE81
Analogous#81FBEB, #8191FB
Triadic#FB81CE, #CEFB81
Split complementary#FB8191, #FBEB81
Tetradic#EB81FB, #FBAE81, #91FB81

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%#50BBF9
Darker −20%#1EA8F8
Darker −30%#078DDC
Darker −40%#056EAB
More saturated +25%#7DCFFF
Less saturated −25%#91CAEB

Channel breakdown

R129
G206
B251
Red129 (50.6%)
Green206 (80.8%)
Blue251 (98.4%)
Hue202.13°
Saturation (HSL)93.85%
Lightness74.51%
Dominant channelBlue
Hex per channelR 81 · G CE · B FB

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