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Recognised as Colour

#803A37

  • #803A37
  • Red
  • Dark
  • Nearest: Sienna

#803A37 is a red with RGB values 128, 58, 55 and HSL 2°, 40%, 36%. It is a dark colour, so white text on it reaches 8.1:1 contrast (AAA for normal text). The nearest named colour is Sienna.

Colour values

#803A37#803A37
HEX#803A37
RGBrgb(128, 58, 55)
RGB (0–1)0.502, 0.2275, 0.2157
RGB percentages50.2%, 22.7%, 21.6%
HSLhsl(2.5, 39.9%, 35.9%)
HSV / HSBhsv(2.5, 57%, 50.2%)
CMYK0%, 54.7%, 57%, 49.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,403,511
CSS custom property--colour: #803A37;

Brightness & contrast

Relative luminance0.07891WCAG 2.x, 0 is black and 1 is white
Perceived brightness85 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.15:1
Contrast with white8.15:1WCAG normal text: AAA
Contrast with black2.58:1WCAG normal text: Fail
Greyscale equivalent#494949
Inverted#7FC5C8

Colour vision & accessibility

Protanopia#4B4636no red cones; affects about 1% of men; ΔE 31.7 from the original
Deuteranopia#5C5536no green cones; the most common form, about 1% of men; ΔE 32.5 from the original
Tritanopia#8C2F3Ano blue cones; rare, and affects men and women equally; ΔE 10.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.15:1WCAG large text: AAA
Contrast with black, large text2.58:1WCAG large text: Fail

Named colours

Nearest named CSS colourSienna (#A0522D)ΔE 21.73, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#377D80
Analogous#803759, #805E37
Triadic#37803A, #3A3780
Split complementary#37805F, #375880
Tetradic#598037, #377D80, #5F3780

Tints, shades & saturation

Lighter +40%#DAABA9
Lighter +30%#CB8885
Lighter +20%#BB6562
Lighter +10%#A44A46
Darker −10%#5C2A28
Darker −20%#391A18
Darker −30%#150A09
Darker −40%#000000
More saturated +25%#972520
Less saturated −25%#694F4E

Channel breakdown

R128
G58
B55
Red128 (50.2%)
Green58 (22.7%)
Blue55 (21.6%)
Hue2.47°
Saturation (HSL)39.89%
Lightness35.88%
Dominant channelRed
Hex per channelR 80 · G 3A · B 37

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Every value on this page was computed from “803a37” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.