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Recognised as Colour

#81283F

  • #81283F
  • Red
  • Dark
  • Nearest: Brown

#81283F is a red with RGB values 129, 40, 63 and HSL 344°, 53%, 33%. It is a dark colour, so white text on it reaches 9.1:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#81283F#81283F
HEX#81283F
RGBrgb(129, 40, 63)
RGB (0–1)0.5059, 0.1569, 0.2471
RGB percentages50.6%, 15.7%, 24.7%
HSLhsl(344.5, 52.7%, 33.1%)
HSV / HSBhsv(344.5, 69%, 50.6%)
CMYK0%, 69%, 51.2%, 49.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,464,447
CSS custom property--colour: #81283F;

Brightness & contrast

Relative luminance0.06544WCAG 2.x, 0 is black and 1 is white
Perceived brightness79.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.1:1
Contrast with white9.1:1WCAG normal text: AAA
Contrast with black2.31:1WCAG normal text: Fail
Greyscale equivalent#3D3D3D
Inverted#7ED7C0

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3C3D3Fno red cones; affects about 1% of men; ΔE 41.2 from the original
Deuteranopia#534F3Dno green cones; the most common form, about 1% of men; ΔE 42 from the original
Tritanopia#8D1931no blue cones; rare, and affects men and women equally; ΔE 12.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.1:1WCAG large text: AAA
Contrast with black, large text2.31:1WCAG large text: Fail

Named colours

Brown · ΔE 26.2Indian red · ΔE 27.6Pale violetred · ΔE 31.1Maroon · ΔE 32.4Sienna · ΔE 33.1Firebrick · ΔE 35.4
Nearest named CSS colourBrown (#A52A2A)ΔE 26.24, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#28816A
Analogous#81286C, #813D28
Triadic#3F8128, #283F81
Split complementary#28813D, #286C81
Tetradic#6C8128, #28816A, #3D2881

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DF96A9
Lighter +30%#D36F89
Lighter +20%#C64969
Lighter +10%#A83452
Darker −10%#5A1C2C
Darker −20%#331019
Darker −30%#0C0406
Darker −40%#000000
More saturated +25%#961335
Less saturated −25%#6C3D49

Channel breakdown

R129
G40
B63
Red129 (50.6%)
Green40 (15.7%)
Blue63 (24.7%)
Hue344.49°
Saturation (HSL)52.66%
Lightness33.14%
Dominant channelRed
Hex per channelR 81 · G 28 · B 3F

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Every value on this page was computed from “81283f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.