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Recognised as Colour

#81FFDD

  • #81FFDD
  • Cyan
  • Light
  • Nearest: Aquamarine

#81FFDD is a cyan with RGB values 129, 255, 221 and HSL 164°, 100%, 75%. It is a light colour, so black text on it reaches 17.3:1 contrast (AAA for normal text). The nearest named colour is Aquamarine.

Colour values

#81FFDD#81FFDD
HEX#81FFDD
RGBrgb(129, 255, 221)
RGB (0–1)0.5059, 1, 0.8667
RGB percentages50.6%, 100%, 86.7%
HSLhsl(163.8, 100%, 75.3%)
HSV / HSBhsv(163.8, 49.4%, 100%)
CMYK49.4%, 0%, 13.3%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,519,645
CSS custom property--colour: #81FFDD;

Brightness & contrast

Relative luminance0.81408WCAG 2.x, 0 is black and 1 is white
Perceived brightness220.7 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 17.28:1
Contrast with white1.22:1WCAG normal text: Fail
Contrast with black17.28:1WCAG normal text: AAA
Greyscale equivalent#E2E2E2
Inverted#7E0022

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#F8F1DBno red cones; affects about 1% of men; ΔE 42.3 from the original
Deuteranopia#E4E3DFno green cones; the most common form, about 1% of men; ΔE 42.9 from the original
Tritanopia#4BFFF5no blue cones; rare, and affects men and women equally; ΔE 14.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.22:1WCAG large text: Fail
Contrast with black, large text17.28:1WCAG large text: AAA

Named colours

Aquamarine · ΔE 4.9Turquoise · ΔE 14.6Medium aquamarine · ΔE 17.5Aqua · ΔE 20.3Cyan · ΔE 20.3Medium turquoise · ΔE 21.5
Nearest named CSS colourAquamarine (#7FFFD4)ΔE 4.89, a close match
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FF81A3
Analogous#81FF9E, #81E2FF
Triadic#DD81FF, #FFDD81
Split complementary#FF81E2, #FF9E81
Tetradic#9E81FF, #FF81A3, #E2FF81

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#E7FFF9
Lighter +10%#B4FFEB
Darker −10%#4EFFCF
Darker −20%#1BFFC1
Darker −30%#00E7A9
Darker −40%#00B483
More saturated +25%#81FFDD
Less saturated −25%#91EFD6

Channel breakdown

R129
G255
B221
Red129 (50.6%)
Green255 (100%)
Blue221 (86.7%)
Hue163.81°
Saturation (HSL)100%
Lightness75.29%
Dominant channelGreen
Hex per channelR 81 · G FF · B DD

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