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Recognised as Colour

#644B16

  • #644B16
  • Orange
  • Dark
  • Nearest: Saddle brown

#644B16 is a orange with RGB values 100, 75, 22 and HSL 41°, 64%, 24%. It is a dark colour, so white text on it reaches 8.2:1 contrast (AAA for normal text). The nearest named colour is Saddle brown.

Colour values

#644B16#644B16
HEX#644B16
RGBrgb(100, 75, 22)
RGB (0–1)0.3922, 0.2941, 0.0863
RGB percentages39.2%, 29.4%, 8.6%
HSLhsl(40.8, 63.9%, 23.9%)
HSV / HSBhsv(40.8, 78%, 39.2%)
CMYK0%, 25%, 78%, 60.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,572,822
CSS custom property--colour: #644B16;

Brightness & contrast

Relative luminance0.07799WCAG 2.x, 0 is black and 1 is white
Perceived brightness79.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.2:1
Contrast with white8.2:1WCAG normal text: AAA
Contrast with black2.56:1WCAG normal text: Fail
Greyscale equivalent#4C4C4C
Inverted#9BB4E9

Colour vision & accessibility

Protanopia#554B0Eno red cones; affects about 1% of men; ΔE 8.2 from the original
Deuteranopia#5B5218no green cones; the most common form, about 1% of men; ΔE 8.7 from the original
Tritanopia#6D4340no blue cones; rare, and affects men and women equally; ΔE 27.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.2:1WCAG large text: AAA
Contrast with black, large text2.56:1WCAG large text: Fail

Named colours

Nearest named CSS colourSaddle brown (#8B4513)ΔE 23.12, a distinctly different colour
Hue familyorange
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#162F64
Analogous#642416, #566416
Triadic#16644B, #4B1664
Split complementary#165664, #241664
Tetradic#166424, #162F64, #641656

Tints, shades & saturation

Lighter +40%#DEB868
Lighter +30%#D5A43E
Lighter +20%#B88A28
Lighter +10%#8E6A1F
Darker −10%#3A2C0D
Darker −20%#100C04
Darker −30%#000000
Darker −40%#000000
More saturated +25%#735007
Less saturated −25%#554625

Channel breakdown

R100
G75
B22
Red100 (39.2%)
Green75 (29.4%)
Blue22 (8.6%)
Hue40.77°
Saturation (HSL)63.93%
Lightness23.92%
Dominant channelRed
Hex per channelR 64 · G 4B · B 16

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Every value on this page was computed from “644b16” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.