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Colour

#66FF81

  • #66FF81
  • Green
  • Light
  • Nearest: Spring green

#66FF81 is a green with RGB values 102, 255, 129 and HSL 131°, 100%, 70%. It is a light colour, so black text on it reaches 16.2:1 contrast (AAA for normal text). The nearest named colour is Spring green.

Colour values

#66FF81#66FF81
HEX#66FF81
RGBrgb(102, 255, 129)
RGB (0–1)0.4, 1, 0.5059
RGB percentages40%, 100%, 50.6%
HSLhsl(130.6, 100%, 70%)
HSV / HSBhsv(130.6, 60%, 100%)
CMYK60%, 0%, 49.4%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,750,081
CSS custom property--colour: #66FF81;

Brightness & contrast

Relative luminance0.7593WCAG 2.x, 0 is black and 1 is white
Perceived brightness207.8 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 16.19:1
Contrast with white1.3:1WCAG normal text: Fail
Contrast with black16.19:1WCAG normal text: AAA
Greyscale equivalent#D5D5D5
Inverted#99007E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#FFEA76no red cones; affects about 1% of men; ΔE 59.7 from the original
Deuteranopia#EFDD8Ano green cones; the most common form, about 1% of men; ΔE 61 from the original
Tritanopia#40FAE2no blue cones; rare, and affects men and women equally; ΔE 52 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.3:1WCAG large text: Fail
Contrast with black, large text16.19:1WCAG large text: AAA

Named colours

Spring green · ΔE 11.2Medium spring green · ΔE 16.5Pale green · ΔE 20Limegreen · ΔE 21.8Light green · ΔE 22.7Yellow green · ΔE 36
Nearest named CSS colourSpring green (#00FF7F)ΔE 11.16, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FF66E4
Analogous#98FF66, #66FFCD
Triadic#8166FF, #FF8166
Split complementary#CD66FF, #FF6698
Tetradic#6698FF, #FF66E4, #FFCD66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#CCFFD5
Lighter +10%#99FFAB
Darker −10%#33FF57
Darker −20%#00FF2D
Darker −30%#00CC24
Darker −40%#00991B
More saturated +25%#66FF81
Less saturated −25%#79EC8D

Channel breakdown

R102
G255
B129
Red102 (40%)
Green255 (100%)
Blue129 (50.6%)
Hue130.59°
Saturation (HSL)100%
Lightness70%
Dominant channelGreen
Hex per channelR 66 · G FF · B 81

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Every value on this page was computed from “66ff81” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.