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Colour

#A64551

  • #A64551
  • Red
  • Dark
  • Nearest: Indian red

#A64551 is a red with RGB values 166, 69, 81 and HSL 353°, 41%, 46%. It is a dark colour, so white text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Indian red.

Colour values

#A64551#A64551
HEX#A64551
RGBrgb(166, 69, 81)
RGB (0–1)0.651, 0.2706, 0.3176
RGB percentages65.1%, 27.1%, 31.8%
HSLhsl(352.6, 41.3%, 46.1%)
HSV / HSBhsv(352.6, 58.4%, 65.1%)
CMYK0%, 58.4%, 51.2%, 34.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,896,721
CSS custom property--colour: #A64551;

Brightness & contrast

Relative luminance0.12957WCAG 2.x, 0 is black and 1 is white
Perceived brightness108.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.85:1
Contrast with white5.85:1WCAG normal text: AA
Contrast with black3.59:1WCAG normal text: Fail
Greyscale equivalent#5A5A5A
Inverted#59BAAE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5B5851no red cones; affects about 1% of men; ΔE 42.5 from the original
Deuteranopia#736C4Fno green cones; the most common form, about 1% of men; ΔE 43.5 from the original
Tritanopia#B5374Ano blue cones; rare, and affects men and women equally; ΔE 11.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.85:1WCAG large text: AAA
Contrast with black, large text3.59:1WCAG large text: AA

Named colours

Indian red · ΔE 14.4Brown · ΔE 20Pale violetred · ΔE 22.4Light coral · ΔE 24.4Sienna · ΔE 25.3Firebrick · ΔE 28.8
Nearest named CSS colourIndian red (#CD5C5C)ΔE 14.4, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#45A69A
Analogous#A64582, #A66A45
Triadic#51A645, #4551A6
Split complementary#45A66A, #4582A6
Tetradic#81A645, #45A69A, #6945A6

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EACDD0
Lighter +30%#DBA9AF
Lighter +20%#CC858E
Lighter +10%#BD616C
Darker −10%#82363F
Darker −20%#5E272E
Darker −30%#3A181C
Darker −40%#16090B
More saturated +25%#C3283B
Less saturated −25%#896267

Channel breakdown

R166
G69
B81
Red166 (65.1%)
Green69 (27.1%)
Blue81 (31.8%)
Hue352.58°
Saturation (HSL)41.28%
Lightness46.08%
Dominant channelRed
Hex per channelR A6 · G 45 · B 51

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Every value on this page was computed from “a64551” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.