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Colour

#A63A4A

  • #A63A4A
  • Red
  • Dark
  • Nearest: Indian red

#A63A4A is a red with RGB values 166, 58, 74 and HSL 351°, 48%, 44%. It is a dark colour, so white text on it reaches 6.3:1 contrast (AA for normal text). The nearest named colour is Indian red.

Colour values

#A63A4A#A63A4A
HEX#A63A4A
RGBrgb(166, 58, 74)
RGB (0–1)0.651, 0.2275, 0.2902
RGB percentages65.1%, 22.7%, 29%
HSLhsl(351.1, 48.2%, 43.9%)
HSV / HSBhsv(351.1, 65.1%, 65.1%)
CMYK0%, 65.1%, 55.4%, 34.9%naive device-independent conversion; real print needs an ICC profile
24-bit integer10,893,898
CSS custom property--colour: #A63A4A;

Brightness & contrast

Relative luminance0.11628WCAG 2.x, 0 is black and 1 is white
Perceived brightness104.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.31:1
Contrast with white6.31:1WCAG normal text: AA
Contrast with black3.33:1WCAG normal text: Fail
Greyscale equivalent#525252
Inverted#59C5B5

Colour vision & accessibility

Protanopia#54524Ano red cones; affects about 1% of men; ΔE 47.8 from the original
Deuteranopia#706847no green cones; the most common form, about 1% of men; ΔE 48.3 from the original
Tritanopia#B52640no blue cones; rare, and affects men and women equally; ΔE 13.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.31:1WCAG large text: AAA
Contrast with black, large text3.33:1WCAG large text: AA

Named colours

Nearest named CSS colourIndian red (#CD5C5C)ΔE 14.77, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#3AA696
Analogous#A63A80, #A6603A
Triadic#4AA63A, #3A4AA6
Split complementary#3AA660, #3A80A6
Tetradic#80A63A, #3AA696, #603AA6

Tints, shades & saturation

Lighter +40%#EAC2C8
Lighter +30%#DD9CA6
Lighter +20%#CF7784
Lighter +10%#C25162
Darker −10%#802D39
Darker −20%#5A2028
Darker −30%#351217
Darker −40%#0F0507
More saturated +25%#C21E36
Less saturated −25%#8A565E

Channel breakdown

R166
G58
B74
Red166 (65.1%)
Green58 (22.7%)
Blue74 (29%)
Hue351.11°
Saturation (HSL)48.21%
Lightness43.92%
Dominant channelRed
Hex per channelR A6 · G 3A · B 4A

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Every value on this page was computed from “a63a4a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.