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Recognised as Colour

#A64251

  • #A64251
  • Red
  • Dark
  • Nearest: Indian red

#A64251 is a red with RGB values 166, 66, 81 and HSL 351°, 43%, 45%. It is a dark colour, so white text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Indian red.

Colour values

#A64251#A64251
HEX#A64251
RGBrgb(166, 66, 81)
RGB (0–1)0.651, 0.2588, 0.3176
RGB percentages65.1%, 25.9%, 31.8%
HSLhsl(351, 43.1%, 45.5%)
HSV / HSBhsv(351, 60.2%, 65.1%)
CMYK0%, 60.2%, 51.2%, 34.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,895,953
CSS custom property--colour: #A64251;

Brightness & contrast

Relative luminance0.12598WCAG 2.x, 0 is black and 1 is white
Perceived brightness107.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.97:1
Contrast with white5.97:1WCAG normal text: AA
Contrast with black3.52:1WCAG normal text: Fail
Greyscale equivalent#585858
Inverted#59BDAE

Colour vision & accessibility

Protanopia#585751no red cones; affects about 1% of men; ΔE 44.5 from the original
Deuteranopia#726B4Fno green cones; the most common form, about 1% of men; ΔE 44.9 from the original
Tritanopia#B53348no blue cones; rare, and affects men and women equally; ΔE 12.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.97:1WCAG large text: AAA
Contrast with black, large text3.52:1WCAG large text: AA

Named colours

Nearest named CSS colourIndian red (#CD5C5C)ΔE 14.98, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#42A697
Analogous#A64283, #A66542
Triadic#51A642, #4251A6
Split complementary#42A665, #4283A6
Tetradic#83A642, #42A697, #6542A6

Tints, shades & saturation

Lighter +40%#EACACF
Lighter +30%#DBA6AE
Lighter +20%#CD818C
Lighter +10%#BE5D6B
Darker −10%#82333F
Darker −20%#5D252D
Darker −30%#39161C
Darker −40%#14080A
More saturated +25%#C3253D
Less saturated −25%#895F65

Channel breakdown

R166
G66
B81
Red166 (65.1%)
Green66 (25.9%)
Blue81 (31.8%)
Hue351°
Saturation (HSL)43.1%
Lightness45.49%
Dominant channelRed
Hex per channelR A6 · G 42 · B 51

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Every value on this page was computed from “a64251” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.