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Colour

#83183C

  • #83183C
  • Red
  • Dark
  • Nearest: Brown

#83183C is a red with RGB values 131, 24, 60 and HSL 340°, 69%, 30%. It is a dark colour, so white text on it reaches 9.7:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#83183C#83183C
HEX#83183C
RGBrgb(131, 24, 60)
RGB (0–1)0.5137, 0.0941, 0.2353
RGB percentages51.4%, 9.4%, 23.5%
HSLhsl(339.8, 69%, 30.4%)
HSV / HSBhsv(339.8, 81.7%, 51.4%)
CMYK0%, 81.7%, 54.2%, 48.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,591,420
CSS custom property--colour: #83183C;

Brightness & contrast

Relative luminance0.05805WCAG 2.x, 0 is black and 1 is white
Perceived brightness76.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.72:1
Contrast with white9.72:1WCAG normal text: AAA
Contrast with black2.16:1WCAG normal text: Fail
Greyscale equivalent#313131
Inverted#7CE7C3

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#34373Dno red cones; affects about 1% of men; ΔE 47.7 from the original
Deuteranopia#504C39no green cones; the most common form, about 1% of men; ΔE 48.6 from the original
Tritanopia#8F0028no blue cones; rare, and affects men and women equally; ΔE 16 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.72:1WCAG large text: AAA
Contrast with black, large text2.16:1WCAG large text: Fail

Named colours

Brown · ΔE 25.7Indian red · ΔE 29Maroon · ΔE 31.7Pale violetred · ΔE 32.3Firebrick · ΔE 34.1Dark red · ΔE 35
Nearest named CSS colourBrown (#A52A2A)ΔE 25.68, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#18835F
Analogous#831872, #832918
Triadic#3C8318, #183C83
Split complementary#188329, #187283
Tetradic#728318, #18835F, #291883

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E87FA2
Lighter +30%#E05483
Lighter +20%#D82964
Lighter +10%#AE2050
Darker −10%#581028
Darker −20%#2D0815
Darker −30%#020001
Darker −40%#000000
More saturated +25%#960536
Less saturated −25%#702B42

Channel breakdown

R131
G24
B60
Red131 (51.4%)
Green24 (9.4%)
Blue60 (23.5%)
Hue339.81°
Saturation (HSL)69.03%
Lightness30.39%
Dominant channelRed
Hex per channelR 83 · G 18 · B 3C

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Every value on this page was computed from “83183c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.