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Colour

#81C1CE

  • #81C1CE
  • Cyan
  • Dark
  • Nearest: Sky blue

#81C1CE is a cyan with RGB values 129, 193, 206 and HSL 190°, 44%, 66%. It is a dark colour, so black text on it reaches 10.5:1 contrast (AAA for normal text). The nearest named colour is Sky blue.

Colour values

#81C1CE#81C1CE
HEX#81C1CE
RGBrgb(129, 193, 206)
RGB (0–1)0.5059, 0.7569, 0.8078
RGB percentages50.6%, 75.7%, 80.8%
HSLhsl(190.1, 44%, 65.7%)
HSV / HSBhsv(190.1, 37.4%, 80.8%)
CMYK37.4%, 6.3%, 0%, 19.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,503,758
CSS custom property--colour: #81C1CE;

Brightness & contrast

Relative luminance0.47263WCAG 2.x, 0 is black and 1 is white
Perceived brightness178 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.45:1
Contrast with white2.01:1WCAG normal text: Fail
Contrast with black10.45:1WCAG normal text: AAA
Greyscale equivalent#B4B4B4
Inverted#7E3E31

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B6BCCFno red cones; affects about 1% of men; ΔE 19.1 from the original
Deuteranopia#A9B3CEno green cones; the most common form, about 1% of men; ΔE 19.4 from the original
Tritanopia#63C7C5no blue cones; rare, and affects men and women equally; ΔE 13.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.01:1WCAG large text: Fail
Contrast with black, large text10.45:1WCAG large text: AAA

Named colours

Sky blue · ΔE 9.9Light blue · ΔE 11.4Powder blue · ΔE 13.1Cadetblue · ΔE 14.6Light steelblue · ΔE 16.5Pale turquoise · ΔE 17.2
Nearest named CSS colourSky blue (#87CEEB)ΔE 9.86, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CE8E81
Analogous#81CEB5, #819BCE
Triadic#CE81C1, #C1CE81
Split complementary#CE819A, #CEB581
Tetradic#B581CE, #CE8E81, #9BCE81

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#EFF7F9
Lighter +20%#CAE5EB
Lighter +10%#A6D3DC
Darker −10%#5CAFC0
Darker −20%#4196A8
Darker −30%#337683
Darker −40%#25555E
More saturated +25%#6BCFE4
Less saturated −25%#97B3B8

Channel breakdown

R129
G193
B206
Red129 (50.6%)
Green193 (75.7%)
Blue206 (80.8%)
Hue190.13°
Saturation (HSL)44%
Lightness65.69%
Dominant channelBlue
Hex per channelR 81 · G C1 · B CE

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Every value on this page was computed from “81c1ce” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.