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Recognised as Colour

#517B21

  • #517B21
  • Green
  • Dark
  • Nearest: Olivedrab

#517B21 is a green with RGB values 81, 123, 33 and HSL 88°, 58%, 31%. It is a dark colour, so white text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Olivedrab.

Colour values

#517B21#517B21
HEX#517B21
RGBrgb(81, 123, 33)
RGB (0–1)0.3176, 0.4824, 0.1294
RGB percentages31.8%, 48.2%, 12.9%
HSLhsl(88, 57.7%, 30.6%)
HSV / HSBhsv(88, 73.2%, 48.2%)
CMYK34.1%, 0%, 73.2%, 51.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,339,937
CSS custom property--colour: #517B21;

Brightness & contrast

Relative luminance0.16025WCAG 2.x, 0 is black and 1 is white
Perceived brightness104.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.99:1
Contrast with white4.99:1WCAG normal text: AA
Contrast with black4.21:1WCAG normal text: Fail
Greyscale equivalent#6C6C6C
Inverted#AE84DE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#817112no red cones; affects about 1% of men; ΔE 27 from the original
Deuteranopia#7B6E29no green cones; the most common form, about 1% of men; ΔE 26.2 from the original
Tritanopia#527669no blue cones; rare, and affects men and women equally; ΔE 41.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.99:1WCAG large text: AAA
Contrast with black, large text4.21:1WCAG large text: AA

Named colours

Olivedrab · ΔE 10.7Dark olivegreen · ΔE 16.7Dark green · ΔE 17.4Forest green · ΔE 20.3Olive · ΔE 22.6Green · ΔE 23.2
Nearest named CSS colourOlivedrab (#6B8E23)ΔE 10.72, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4B217B
Analogous#7B7821, #247B21
Triadic#21517B, #7B2151
Split complementary#21247B, #78217B
Tetradic#217B78, #4B217B, #7B2124

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B7DF89
Lighter +30%#9ED461
Lighter +20%#86CA38
Lighter +10%#6BA32C
Darker −10%#375316
Darker −20%#1C2B0B
Darker −30%#020201
Darker −40%#000000
More saturated +25%#528F0E
Less saturated −25%#506835

Channel breakdown

R81
G123
B33
Red81 (31.8%)
Green123 (48.2%)
Blue33 (12.9%)
Hue88°
Saturation (HSL)57.69%
Lightness30.59%
Dominant channelGreen
Hex per channelR 51 · G 7B · B 21

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Every value on this page was computed from “517b21” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.