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Recognised as Colour

#644D22

  • #644D22
  • Orange
  • Dark
  • Nearest: Dark olivegreen

#644D22 is a orange with RGB values 100, 77, 34 and HSL 39°, 49%, 26%. It is a dark colour, so white text on it reaches 8:1 contrast (AAA for normal text). The nearest named colour is Dark olivegreen.

Colour values

#644D22#644D22
HEX#644D22
RGBrgb(100, 77, 34)
RGB (0–1)0.3922, 0.302, 0.1333
RGB percentages39.2%, 30.2%, 13.3%
HSLhsl(39.1, 49.3%, 26.3%)
HSV / HSBhsv(39.1, 66%, 39.2%)
CMYK0%, 23%, 66%, 60.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,573,346
CSS custom property--colour: #644D22;

Brightness & contrast

Relative luminance0.08133WCAG 2.x, 0 is black and 1 is white
Perceived brightness81.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8:1
Contrast with white8:1WCAG normal text: AAA
Contrast with black2.63:1WCAG normal text: Fail
Greyscale equivalent#4F4F4F
Inverted#9BB2DD

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#574D1Eno red cones; affects about 1% of men; ΔE 6.9 from the original
Deuteranopia#5C5323no green cones; the most common form, about 1% of men; ΔE 7.5 from the original
Tritanopia#6D4643no blue cones; rare, and affects men and women equally; ΔE 23.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8:1WCAG large text: AAA
Contrast with black, large text2.63:1WCAG large text: Fail

Named colours

Dark olivegreen · ΔE 24.5Saddle brown · ΔE 25.5Sienna · ΔE 27.7Dim grey · ΔE 30.7Gray · ΔE 34.9Dark slate grey · ΔE 36.3
Nearest named CSS colourDark olivegreen (#556B2F)ΔE 24.53, a distinctly different colour
Hue familyorange
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#223964
Analogous#642C22, #5A6422
Triadic#22644D, #4D2264
Split complementary#225A64, #2C2264
Tetradic#22642C, #223964, #64225A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D3B67F
Lighter +30%#C6A059
Lighter +20%#B0883C
Lighter +10%#8A6A2F
Darker −10%#3E3015
Darker −20%#181208
Darker −30%#000000
Darker −40%#000000
More saturated +25%#755211
Less saturated −25%#534833

Channel breakdown

R100
G77
B34
Red100 (39.2%)
Green77 (30.2%)
Blue34 (13.3%)
Hue39.09°
Saturation (HSL)49.25%
Lightness26.27%
Dominant channelRed
Hex per channelR 64 · G 4D · B 22

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Every value on this page was computed from “644d22” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.