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Colour

#21E400

  • #21E400
  • Green
  • Light
  • Nearest: Lime

#21E400 is a green with RGB values 33, 228, 0 and HSL 111°, 100%, 45%. It is a light colour, so black text on it reaches 12.2:1 contrast (AAA for normal text). The nearest named colour is Lime.

Colour values

#21E400#21E400
HEX#21E400
RGBrgb(33, 228, 0)
RGB (0–1)0.1294, 0.8941, 0
RGB percentages12.9%, 89.4%, 0%
HSLhsl(111.3, 100%, 44.7%)
HSV / HSBhsv(111.3, 100%, 89.4%)
CMYK85.5%, 0%, 100%, 10.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,221,056
CSS custom property--colour: #21E400;

Brightness & contrast

Relative luminance0.5581WCAG 2.x, 0 is black and 1 is white
Perceived brightness175.6 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 12.16:1
Contrast with white1.73:1WCAG normal text: Fail
Contrast with black12.16:1WCAG normal text: AAA
Greyscale equivalent#AAAAAA
Inverted#DE1BFF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#EACD00no red cones; affects about 1% of men; ΔE 72 from the original
Deuteranopia#D6C033no green cones; the most common form, about 1% of men; ΔE 71.2 from the original
Tritanopia#00DDC2no blue cones; rare, and affects men and women equally; ΔE 80.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.73:1WCAG large text: Fail
Contrast with black, large text12.16:1WCAG large text: AAA

Named colours

Lime · ΔE 13.6Lawn green · ΔE 15.8Chartreuse · ΔE 16.7Limegreen · ΔE 19.7Green yellow · ΔE 28.4Spring green · ΔE 31
Nearest named CSS colourLime (#00FF00)ΔE 13.62, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C300E4
Analogous#93E400, #00E451
Triadic#0021E4, #E40021
Split complementary#5100E4, #E40093
Tetradic#0093E4, #C300E4, #E45100

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BCFFB1
Lighter +30%#91FF7E
Lighter +20%#65FF4B
Lighter +10%#39FF18
Darker −10%#1AB100
Darker −20%#127E00
Darker −30%#0B4B00
Darker −40%#031800
More saturated +25%#21E400
Less saturated −25%#35C81C

Channel breakdown

R33
G228
B0
Red33 (12.9%)
Green228 (89.4%)
Blue0 (0%)
Hue111.32°
Saturation (HSL)100%
Lightness44.71%
Dominant channelGreen
Hex per channelR 21 · G E4 · B 00

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Every value on this page was computed from “21e400” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.