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Recognised as Colour

#81C4D0

  • #81C4D0
  • Cyan
  • Dark
  • Nearest: Sky blue

#81C4D0 is a cyan with RGB values 129, 196, 208 and HSL 189°, 46%, 66%. It is a dark colour, so black text on it reaches 10.7:1 contrast (AAA for normal text). The nearest named colour is Sky blue.

Colour values

#81C4D0#81C4D0
HEX#81C4D0
RGBrgb(129, 196, 208)
RGB (0–1)0.5059, 0.7686, 0.8157
RGB percentages50.6%, 76.9%, 81.6%
HSLhsl(189.1, 45.7%, 66.1%)
HSV / HSBhsv(189.1, 38%, 81.6%)
CMYK38%, 5.8%, 0%, 18.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,504,528
CSS custom property--colour: #81C4D0;

Brightness & contrast

Relative luminance0.48701WCAG 2.x, 0 is black and 1 is white
Perceived brightness180.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.74:1
Contrast with white1.96:1WCAG normal text: Fail
Contrast with black10.74:1WCAG normal text: AAA
Greyscale equivalent#B7B7B7
Inverted#7E3B2F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B9BFD1no red cones; affects about 1% of men; ΔE 20 from the original
Deuteranopia#ACB5D0no green cones; the most common form, about 1% of men; ΔE 20.7 from the original
Tritanopia#61CAC8no blue cones; rare, and affects men and women equally; ΔE 13.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.96:1WCAG large text: Fail
Contrast with black, large text10.74:1WCAG large text: AAA

Named colours

Sky blue · ΔE 10Light blue · ΔE 11.3Powder blue · ΔE 12.5Cadetblue · ΔE 15.1Pale turquoise · ΔE 16.2Light steelblue · ΔE 17.3
Nearest named CSS colourSky blue (#87CEEB)ΔE 9.99, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D08D81
Analogous#81D0B5, #819CD0
Triadic#D081C4, #C4D081
Split complementary#D0819D, #D0B581
Tetradic#B481D0, #D08D81, #9CD081

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#F0F8FA
Lighter +20%#CBE7EC
Lighter +10%#A6D5DE
Darker −10%#5CB3C2
Darker −20%#409BAB
Darker −30%#327986
Darker −40%#245861
More saturated +25%#6BD3E6
Less saturated −25%#97B5BA

Channel breakdown

R129
G196
B208
Red129 (50.6%)
Green196 (76.9%)
Blue208 (81.6%)
Hue189.11°
Saturation (HSL)45.66%
Lightness66.08%
Dominant channelBlue
Hex per channelR 81 · G C4 · B D0

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Every value on this page was computed from “81c4d0” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.