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Recognised as Colour

#21AA01

  • #21AA01
  • Green
  • Dark
  • Nearest: Limegreen

#21AA01 is a green with RGB values 33, 170, 1 and HSL 109°, 99%, 34%. It is a dark colour, so black text on it reaches 6.8:1 contrast (AA for normal text). The nearest named colour is Limegreen.

Colour values

#21AA01#21AA01
HEX#21AA01
RGBrgb(33, 170, 1)
RGB (0–1)0.1294, 0.6667, 0.0039
RGB percentages12.9%, 66.7%, 0.4%
HSLhsl(108.6, 98.8%, 33.5%)
HSV / HSBhsv(108.6, 99.4%, 66.7%)
CMYK80.6%, 0%, 99.4%, 33.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,206,209
CSS custom property--colour: #21AA01;

Brightness & contrast

Relative luminance0.29075WCAG 2.x, 0 is black and 1 is white
Perceived brightness131.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.81:1
Contrast with white3.08:1WCAG normal text: Fail
Contrast with black6.81:1WCAG normal text: AA
Greyscale equivalent#818181
Inverted#DE55FE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#AE9900no red cones; affects about 1% of men; ΔE 56.1 from the original
Deuteranopia#A08F24no green cones; the most common form, about 1% of men; ΔE 56.1 from the original
Tritanopia#00A490no blue cones; rare, and affects men and women equally; ΔE 64.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.08:1WCAG large text: AA
Contrast with black, large text6.81:1WCAG large text: AAA

Named colours

Limegreen · ΔE 13.3Green · ΔE 20.9Forest green · ΔE 22.6Yellow green · ΔE 28.3Spring green · ΔE 35.1Olivedrab · ΔE 35.4
Nearest named CSS colourLimegreen (#32CD32)ΔE 13.26, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8A01AA
Analogous#76AA01, #01AA35
Triadic#0121AA, #AA0121
Split complementary#3501AA, #AA0176
Tetradic#0176AA, #8A01AA, #AA3501

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#92FE79
Lighter +30%#69FE46
Lighter +20%#40FE13
Lighter +10%#2BDD01
Darker −10%#177701
Darker −20%#0D4500
Darker −30%#031200
Darker −40%#000000
More saturated +25%#20AB00
Less saturated −25%#2E9516

Channel breakdown

R33
G170
B1
Red33 (12.9%)
Green170 (66.7%)
Blue1 (0.4%)
Hue108.64°
Saturation (HSL)98.83%
Lightness33.53%
Dominant channelGreen
Hex per channelR 21 · G AA · B 01

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Every value on this page was computed from “21aa01” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.