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Recognised as Colour

#646B17

  • #646B17
  • Yellow
  • Dark
  • Nearest: Dark olivegreen

#646B17 is a yellow with RGB values 100, 107, 23 and HSL 65°, 65%, 25%. It is a dark colour, so white text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Dark olivegreen.

Colour values

#646B17#646B17
HEX#646B17
RGBrgb(100, 107, 23)
RGB (0–1)0.3922, 0.4196, 0.0902
RGB percentages39.2%, 42%, 9%
HSLhsl(65, 64.6%, 25.5%)
HSV / HSBhsv(65, 78.5%, 42%)
CMYK6.5%, 0%, 78.5%, 58%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,581,015
CSS custom property--colour: #646B17;

Brightness & contrast

Relative luminance0.13287WCAG 2.x, 0 is black and 1 is white
Perceived brightness98.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.74:1
Contrast with white5.74:1WCAG normal text: AA
Contrast with black3.66:1WCAG normal text: Fail
Greyscale equivalent#636363
Inverted#9B94E8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#736505no red cones; affects about 1% of men; ΔE 11.3 from the original
Deuteranopia#73671Eno green cones; the most common form, about 1% of men; ΔE 10 from the original
Tritanopia#6B645Bno blue cones; rare, and affects men and women equally; ΔE 39.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.74:1WCAG large text: AAA
Contrast with black, large text3.66:1WCAG large text: AA

Named colours

Dark olivegreen · ΔE 13.3Olive · ΔE 16.3Olivedrab · ΔE 19.5Dark green · ΔE 30.3Dark khaki · ΔE 30.8Dark goldenrod · ΔE 34.9
Nearest named CSS colourDark olivegreen (#556B2F)ΔE 13.3, a distinctly different colour
Hue familyyellow
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#1E176B
Analogous#6B4817, #3A6B17
Triadic#17646B, #6B1764
Split complementary#173A6B, #48176B
Tetradic#176B48, #1E176B, #6B173A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D6E06E
Lighter +30%#CBD744
Lighter +20%#B2BF29
Lighter +10%#8B9520
Darker −10%#3D410E
Darker −20%#161705
Darker −30%#000000
Darker −40%#000000
More saturated +25%#727B07
Less saturated −25%#565B27

Channel breakdown

R100
G107
B23
Red100 (39.2%)
Green107 (42%)
Blue23 (9%)
Hue65°
Saturation (HSL)64.62%
Lightness25.49%
Dominant channelGreen
Hex per channelR 64 · G 6B · B 17

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Every value on this page was computed from “646b17” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.