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Recognised as Colour

#21AD31

  • #21AD31
  • Green
  • Dark
  • Nearest: Forest green

#21AD31 is a green with RGB values 33, 173, 49 and HSL 127°, 68%, 40%. It is a dark colour, so black text on it reaches 7.1:1 contrast (AAA for normal text). The nearest named colour is Forest green.

Colour values

#21AD31#21AD31
HEX#21AD31
RGBrgb(33, 173, 49)
RGB (0–1)0.1294, 0.6784, 0.1922
RGB percentages12.9%, 67.8%, 19.2%
HSLhsl(126.9, 68%, 40.4%)
HSV / HSBhsv(126.9, 80.9%, 67.8%)
CMYK80.9%, 0%, 71.7%, 32.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,207,025
CSS custom property--colour: #21AD31;

Brightness & contrast

Relative luminance0.30432WCAG 2.x, 0 is black and 1 is white
Perceived brightness134.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.09:1
Contrast with white2.96:1WCAG normal text: Fail
Contrast with black7.09:1WCAG normal text: AAA
Greyscale equivalent#868686
Inverted#DE52CE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B09C1Dno red cones; affects about 1% of men; ΔE 55.4 from the original
Deuteranopia#A1923Eno green cones; the most common form, about 1% of men; ΔE 54.8 from the original
Tritanopia#00A894no blue cones; rare, and affects men and women equally; ΔE 54.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.96:1WCAG large text: Fail
Contrast with black, large text7.09:1WCAG large text: AAA

Named colours

Forest green · ΔE 16.3Limegreen · ΔE 16.7Green · ΔE 17.7Medium seagreen · ΔE 29.2Yellow green · ΔE 30.3Light green · ΔE 31.2
Nearest named CSS colourForest green (#228B22)ΔE 16.29, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AD219D
Analogous#57AD21, #21AD77
Triadic#3121AD, #AD3121
Split complementary#7721AD, #AD2157
Tetradic#2157AD, #AD219D, #AD7721

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#ABEFB3
Lighter +30%#80E78C
Lighter +20%#55DF65
Lighter +10%#2BD63E
Darker −10%#198225
Darker −20%#115719
Darker −30%#082D0D
Darker −40%#000200
More saturated +25%#07C71D
Less saturated −25%#3B9345

Channel breakdown

R33
G173
B49
Red33 (12.9%)
Green173 (67.8%)
Blue49 (19.2%)
Hue126.86°
Saturation (HSL)67.96%
Lightness40.39%
Dominant channelGreen
Hex per channelR 21 · G AD · B 31

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Every value on this page was computed from “21ad31” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.