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Colour

#21C811

  • #21C811
  • Green
  • Dark
  • Nearest: Limegreen

#21C811 is a green with RGB values 33, 200, 17 and HSL 115°, 84%, 43%. It is a dark colour, so black text on it reaches 9.3:1 contrast (AAA for normal text). The nearest named colour is Limegreen.

Colour values

#21C811#21C811
HEX#21C811
RGBrgb(33, 200, 17)
RGB (0–1)0.1294, 0.7843, 0.0667
RGB percentages12.9%, 78.4%, 6.7%
HSLhsl(114.8, 84.3%, 42.5%)
HSV / HSBhsv(114.8, 91.5%, 78.4%)
CMYK83.5%, 0%, 91.5%, 21.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,213,905
CSS custom property--colour: #21C811;

Brightness & contrast

Relative luminance0.41672WCAG 2.x, 0 is black and 1 is white
Perceived brightness154.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.33:1
Contrast with white2.25:1WCAG normal text: Fail
Contrast with black9.33:1WCAG normal text: AAA
Greyscale equivalent#979797
Inverted#DE37EE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#CDB400no red cones; affects about 1% of men; ΔE 64.3 from the original
Deuteranopia#BCA830no green cones; the most common form, about 1% of men; ΔE 64.1 from the original
Tritanopia#00C2AAno blue cones; rare, and affects men and women equally; ΔE 70.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.25:1WCAG large text: Fail
Contrast with black, large text9.33:1WCAG large text: AAA

Named colours

Limegreen · ΔE 6.8Lawn green · ΔE 25.2Chartreuse · ΔE 26.5Spring green · ΔE 28.2Lime · ΔE 28.6Green yellow · ΔE 30.7
Nearest named CSS colourLimegreen (#32CD32)ΔE 6.84, clearly different but related
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B811C8
Analogous#7CC811, #11C85D
Triadic#1121C8, #C81121
Split complementary#5C11C8, #C8117D
Tetradic#117DC8, #B811C8, #C85D11

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B4F8AD
Lighter +30%#88F47E
Lighter +20%#5DF04F
Lighter +10%#32EC20
Darker −10%#19990D
Darker −20%#116A09
Darker −30%#0A3B05
Darker −40%#020C01
More saturated +25%#13D900
Less saturated −25%#37AD2C

Channel breakdown

R33
G200
B17
Red33 (12.9%)
Green200 (78.4%)
Blue17 (6.7%)
Hue114.75°
Saturation (HSL)84.33%
Lightness42.55%
Dominant channelGreen
Hex per channelR 21 · G C8 · B 11

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Every value on this page was computed from “21c811” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.