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Recognised as Colour

#81D4E8

  • #81D4E8
  • Cyan
  • Light
  • Nearest: Sky blue

#81D4E8 is a cyan with RGB values 129, 212, 232 and HSL 192°, 69%, 71%. It is a light colour, so black text on it reaches 12.5:1 contrast (AAA for normal text). The nearest named colour is Sky blue.

Colour values

#81D4E8#81D4E8
HEX#81D4E8
RGBrgb(129, 212, 232)
RGB (0–1)0.5059, 0.8314, 0.9098
RGB percentages50.6%, 83.1%, 91%
HSLhsl(191.7, 69.1%, 70.8%)
HSV / HSBhsv(191.7, 44.4%, 91%)
CMYK44.4%, 8.6%, 0%, 9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,508,648
CSS custom property--colour: #81D4E8;

Brightness & contrast

Relative luminance0.5758WCAG 2.x, 0 is black and 1 is white
Perceived brightness193.6 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 12.52:1
Contrast with white1.68:1WCAG normal text: Fail
Contrast with black12.52:1WCAG normal text: AAA
Greyscale equivalent#C4C4C4
Inverted#7E2B17

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#C5CFE9no red cones; affects about 1% of men; ΔE 22.4 from the original
Deuteranopia#B5C2E8no green cones; the most common form, about 1% of men; ΔE 23.9 from the original
Tritanopia#50DCDAno blue cones; rare, and affects men and women equally; ΔE 18.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.68:1WCAG large text: Fail
Contrast with black, large text12.52:1WCAG large text: AAA

Named colours

Sky blue · ΔE 6.5Light blue · ΔE 11.6Powder blue · ΔE 12.8Light skyblue · ΔE 14.2Pale turquoise · ΔE 14.8Light steelblue · ΔE 19.1
Nearest named CSS colourSky blue (#87CEEB)ΔE 6.5, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E89581
Analogous#81E8C8, #81A1E8
Triadic#E881D4, #D4E881
Split complementary#E881A1, #E8C881
Tetradic#C881E8, #E89581, #A1E881

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#D7F1F8
Lighter +10%#ACE3F0
Darker −10%#56C5E0
Darker −20%#2BB7D8
Darker −30%#2094B0
Darker −40%#187085
More saturated +25%#6EDFFB
Less saturated −25%#94C9D5

Channel breakdown

R129
G212
B232
Red129 (50.6%)
Green212 (83.1%)
Blue232 (91%)
Hue191.65°
Saturation (HSL)69.13%
Lightness70.78%
Dominant channelBlue
Hex per channelR 81 · G D4 · B E8

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Every value on this page was computed from “81d4e8” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.