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Recognised as Colour

#81E5BF

  • #81E5BF
  • Cyan
  • Light
  • Nearest: Medium aquamarine

#81E5BF is a cyan with RGB values 129, 229, 191 and HSL 157°, 66%, 70%. It is a light colour, so black text on it reaches 13.9:1 contrast (AAA for normal text). The nearest named colour is Medium aquamarine.

Colour values

#81E5BF#81E5BF
HEX#81E5BF
RGBrgb(129, 229, 191)
RGB (0–1)0.5059, 0.898, 0.749
RGB percentages50.6%, 89.8%, 74.9%
HSLhsl(157.2, 65.8%, 70.2%)
HSV / HSBhsv(157.2, 43.7%, 89.8%)
CMYK43.7%, 0%, 16.6%, 10.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,512,959
CSS custom property--colour: #81E5BF;

Brightness & contrast

Relative luminance0.64467WCAG 2.x, 0 is black and 1 is white
Perceived brightness199.8 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 13.89:1
Contrast with white1.51:1WCAG normal text: Fail
Contrast with black13.89:1WCAG normal text: AAA
Greyscale equivalent#CDCDCD
Inverted#7E1A40

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#E1D9BDno red cones; affects about 1% of men; ΔE 36.6 from the original
Deuteranopia#D1CDC1no green cones; the most common form, about 1% of men; ΔE 37.5 from the original
Tritanopia#62E6DAno blue cones; rare, and affects men and women equally; ΔE 14.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.51:1WCAG large text: Fail
Contrast with black, large text13.89:1WCAG large text: AAA

Named colours

Medium aquamarine · ΔE 8.6Aquamarine · ΔE 10.8Turquoise · ΔE 15.1Medium turquoise · ΔE 19.3Dark seagreen · ΔE 20.5Light seagreen · ΔE 24.3
Nearest named CSS colourMedium aquamarine (#66CDAA)ΔE 8.6, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E581A7
Analogous#81E58D, #81D9E5
Triadic#BF81E5, #E5BF81
Split complementary#E581D9, #E58D81
Tetradic#8D81E5, #E581A7, #D9E581

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#D6F6EA
Lighter +10%#ABEED4
Darker −10%#57DCAA
Darker −20%#2CD494
Darker −30%#23AA77
Darker −40%#1A8059
More saturated +25%#6EF8C4
Less saturated −25%#94D2BA

Channel breakdown

R129
G229
B191
Red129 (50.6%)
Green229 (89.8%)
Blue191 (74.9%)
Hue157.2°
Saturation (HSL)65.79%
Lightness70.2%
Dominant channelGreen
Hex per channelR 81 · G E5 · B BF

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Every value on this page was computed from “81e5bf” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.