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Recognised as Colour

#A6666D

  • #A6666D
  • Red
  • Dark
  • Nearest: Rosy brown

#A6666D is a red with RGB values 166, 102, 109 and HSL 353°, 26%, 53%. It is a dark colour, so black text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Rosy brown.

Colour values

#A6666D#A6666D
HEX#A6666D
RGBrgb(166, 102, 109)
RGB (0–1)0.651, 0.4, 0.4275
RGB percentages65.1%, 40%, 42.7%
HSLhsl(353.4, 26.4%, 52.5%)
HSV / HSBhsv(353.4, 38.6%, 65.1%)
CMYK0%, 38.6%, 34.3%, 34.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,905,197
CSS custom property--colour: #A6666D;

Brightness & contrast

Relative luminance0.18714WCAG 2.x, 0 is black and 1 is white
Perceived brightness125.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.74:1
Contrast with white4.43:1WCAG normal text: Fail
Contrast with black4.74:1WCAG normal text: AA
Greyscale equivalent#747474
Inverted#599992

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#71706Dno red cones; affects about 1% of men; ΔE 27.5 from the original
Deuteranopia#817D6Cno green cones; the most common form, about 1% of men; ΔE 28.4 from the original
Tritanopia#B16069no blue cones; rare, and affects men and women equally; ΔE 7.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.43:1WCAG large text: AA
Contrast with black, large text4.74:1WCAG large text: AAA

Named colours

Rosy brown · ΔE 16.4Pale violetred · ΔE 22.5Indian red · ΔE 23.8Light coral · ΔE 25.9Gray · ΔE 27.7Dim grey · ΔE 28.2
Nearest named CSS colourRosy brown (#BC8F8F)ΔE 16.39, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#66A69F
Analogous#A6668D, #A67F66
Triadic#6DA666, #666DA6
Split complementary#66A67F, #668DA6
Tetradic#8DA666, #66A69F, #7F66A6

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F1E7E8
Lighter +30%#DEC7C9
Lighter +20%#CCA6AB
Lighter +10%#B9868C
Darker −10%#895056
Darker −20%#693D42
Darker −30%#492A2E
Darker −40%#281819
More saturated +25%#C44855
Less saturated −25%#888485

Channel breakdown

R166
G102
B109
Red166 (65.1%)
Green102 (40%)
Blue109 (42.7%)
Hue353.44°
Saturation (HSL)26.45%
Lightness52.55%
Dominant channelRed
Hex per channelR A6 · G 66 · B 6D

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Every value on this page was computed from “a6666d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.