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Colour

#21814B

  • #21814B
  • Green
  • Dark
  • Nearest: Sea green

#21814B is a green with RGB values 33, 129, 75 and HSL 146°, 59%, 32%. It is a dark colour, so white text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Sea green.

Colour values

#21814B#21814B
HEX#21814B
RGBrgb(33, 129, 75)
RGB (0–1)0.1294, 0.5059, 0.2941
RGB percentages12.9%, 50.6%, 29.4%
HSLhsl(146.3, 59.3%, 31.8%)
HSV / HSBhsv(146.3, 74.4%, 50.6%)
CMYK74.4%, 0%, 41.9%, 49.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,195,787
CSS custom property--colour: #21814B;

Brightness & contrast

Relative luminance0.16532WCAG 2.x, 0 is black and 1 is white
Perceived brightness103.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.88:1
Contrast with white4.88:1WCAG normal text: AA
Contrast with black4.31:1WCAG normal text: Fail
Greyscale equivalent#696969
Inverted#DE7EB4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#817647no red cones; affects about 1% of men; ΔE 38 from the original
Deuteranopia#756E4Fno green cones; the most common form, about 1% of men; ΔE 38 from the original
Tritanopia#007F74no blue cones; rare, and affects men and women equally; ΔE 25.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.88:1WCAG large text: AAA
Contrast with black, large text4.31:1WCAG large text: AA

Named colours

Sea green · ΔE 4.2Medium seagreen · ΔE 19.5Dark green · ΔE 23.5Dark olivegreen · ΔE 24Forest green · ΔE 25.3Dark seagreen · ΔE 29.7
Nearest named CSS colourSea green (#2E8B57)ΔE 4.22, a close match
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#812157
Analogous#278121, #21817B
Triadic#4B2181, #814B21
Split complementary#7B2181, #812127
Tetradic#212781, #812157, #817B21

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8CE2B2
Lighter +30%#64D796
Lighter +20%#3BCD7B
Lighter +10%#2BAA63
Darker −10%#175833
Darker −20%#0C301C
Darker −30%#020704
Darker −40%#000000
More saturated +25%#0D9548
Less saturated −25%#356D4E

Channel breakdown

R33
G129
B75
Red33 (12.9%)
Green129 (50.6%)
Blue75 (29.4%)
Hue146.25°
Saturation (HSL)59.26%
Lightness31.76%
Dominant channelGreen
Hex per channelR 21 · G 81 · B 4B

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Every value on this page was computed from “21814b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.