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Colour

#81CB00

  • #81CB00
  • Green
  • Dark
  • Nearest: Yellow green

#81CB00 is a green with RGB values 129, 203, 0 and HSL 82°, 100%, 40%. It is a dark colour, so black text on it reaches 10.5:1 contrast (AAA for normal text). The nearest named colour is Yellow green.

Colour values

#81CB00#81CB00
HEX#81CB00
RGBrgb(129, 203, 0)
RGB (0–1)0.5059, 0.7961, 0
RGB percentages50.6%, 79.6%, 0%
HSLhsl(81.9, 100%, 39.8%)
HSV / HSBhsv(81.9, 100%, 79.6%)
CMYK36.5%, 0%, 100%, 20.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,506,112
CSS custom property--colour: #81CB00;

Brightness & contrast

Relative luminance0.47379WCAG 2.x, 0 is black and 1 is white
Perceived brightness170.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.48:1
Contrast with white2:1WCAG normal text: Fail
Contrast with black10.48:1WCAG normal text: AAA
Greyscale equivalent#ADADAD
Inverted#7E34FF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#D5BB00no red cones; affects about 1% of men; ΔE 42.3 from the original
Deuteranopia#CBB52Ano green cones; the most common form, about 1% of men; ΔE 42.1 from the original
Tritanopia#84C2ACno blue cones; rare, and affects men and women equally; ΔE 72.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2:1WCAG large text: Fail
Contrast with black, large text10.48:1WCAG large text: AAA

Named colours

Yellow green · ΔE 12.4Green yellow · ΔE 19.9Limegreen · ΔE 23Lawn green · ΔE 27.1Chartreuse · ΔE 28.2Olivedrab · ΔE 36.8
Nearest named CSS colourYellow green (#9ACD32)ΔE 12.36, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4A00CB
Analogous#CBB000, #1BCB00
Triadic#0081CB, #CB0081
Split complementary#001BCB, #B000CB
Tetradic#00CBB0, #4A00CB, #CB001B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D9FF98
Lighter +30%#C7FF65
Lighter +20%#B4FF32
Lighter +10%#A1FE00
Darker −10%#619800
Darker −20%#406500
Darker −30%#203200
Darker −40%#000000
More saturated +25%#81CB00
Less saturated −25%#7AB219

Channel breakdown

R129
G203
B0
Red129 (50.6%)
Green203 (79.6%)
Blue0 (0%)
Hue81.87°
Saturation (HSL)100%
Lightness39.8%
Dominant channelGreen
Hex per channelR 81 · G CB · B 00

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Every value on this page was computed from “81cb00” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.