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Recognised as Colour

#648B21

  • #648B21
  • Green
  • Dark
  • Nearest: Olivedrab

#648B21 is a green with RGB values 100, 139, 33 and HSL 82°, 62%, 34%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Olivedrab.

Colour values

#648B21#648B21
HEX#648B21
RGBrgb(100, 139, 33)
RGB (0–1)0.3922, 0.5451, 0.1294
RGB percentages39.2%, 54.5%, 12.9%
HSLhsl(82.1, 61.6%, 33.7%)
HSV / HSBhsv(82.1, 76.3%, 54.5%)
CMYK28.1%, 0%, 76.3%, 45.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,589,217
CSS custom property--colour: #648B21;

Brightness & contrast

Relative luminance0.21284WCAG 2.x, 0 is black and 1 is white
Perceived brightness120.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.26:1
Contrast with white3.99:1WCAG normal text: Fail
Contrast with black5.26:1WCAG normal text: AA
Greyscale equivalent#7B7B7B
Inverted#9B74DE

Colour vision & accessibility

Protanopia#92810Ano red cones; affects about 1% of men; ΔE 26.2 from the original
Deuteranopia#8D7E2Bno green cones; the most common form, about 1% of men; ΔE 25.7 from the original
Tritanopia#688477no blue cones; rare, and affects men and women equally; ΔE 48.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.99:1WCAG large text: AA
Contrast with black, large text5.26:1WCAG large text: AAA

Named colours

Nearest named CSS colourOlivedrab (#6B8E23)ΔE 2.22, below the just-noticeable difference
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#48218B
Analogous#8B7D21, #2F8B21
Triadic#21648B, #8B2164
Split complementary#212F8B, #7D218B
Tetradic#218B7D, #48218B, #8B212F

Tints, shades & saturation

Lighter +40%#C7E593
Lighter +30%#B2DC69
Lighter +20%#9CD240
Lighter +10%#82B42B
Darker −10%#466217
Darker −20%#29390D
Darker −30%#0B0F04
Darker −40%#000000
More saturated +25%#6AA00C
Less saturated −25%#5E7536

Channel breakdown

R100
G139
B33
Red100 (39.2%)
Green139 (54.5%)
Blue33 (12.9%)
Hue82.08°
Saturation (HSL)61.63%
Lightness33.73%
Dominant channelGreen
Hex per channelR 64 · G 8B · B 21

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Every value on this page was computed from “648b21” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.