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Recognised as Colour

#A1738A

  • #A1738A
  • Red
  • Dark
  • Nearest: Rosy brown

#A1738A is a red with RGB values 161, 115, 138 and HSL 330°, 20%, 54%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Rosy brown.

Colour values

#A1738A#A1738A
HEX#A1738A
RGBrgb(161, 115, 138)
RGB (0–1)0.6314, 0.451, 0.5412
RGB percentages63.1%, 45.1%, 54.1%
HSLhsl(330, 19.7%, 54.1%)
HSV / HSBhsv(330, 28.6%, 63.1%)
CMYK0%, 28.6%, 14.3%, 36.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,580,874
CSS custom property--colour: #A1738A;

Brightness & contrast

Relative luminance0.21674WCAG 2.x, 0 is black and 1 is white
Perceived brightness133 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.33:1
Contrast with white3.94:1WCAG normal text: Fail
Contrast with black5.33:1WCAG normal text: AA
Greyscale equivalent#7E7E7E
Inverted#5E8C75

Colour vision & accessibility

Protanopia#767C8Bno red cones; affects about 1% of men; ΔE 21.1 from the original
Deuteranopia#818389no green cones; the most common form, about 1% of men; ΔE 21.4 from the original
Tritanopia#A7727Bno blue cones; rare, and affects men and women equally; ΔE 8.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.94:1WCAG large text: AA
Contrast with black, large text5.33:1WCAG large text: AAA

Named colours

Nearest named CSS colourRosy brown (#BC8F8F)ΔE 16.25, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#73A18A
Analogous#A173A1, #A17373
Triadic#8AA173, #738AA1
Split complementary#73A173, #73A1A1
Tetradic#A1A173, #73A18A, #7373A1

Tints, shades & saturation

Lighter +40%#F3EDF0
Lighter +30%#DECFD7
Lighter +20%#CAB0BD
Lighter +10%#B592A4
Darker −10%#875A71
Darker −20%#684657
Darker −30%#4A313E
Darker −40%#2B1D24
More saturated +25%#BE568A
Less saturated −25%#8A8A8A

Channel breakdown

R161
G115
B138
Red161 (63.1%)
Green115 (45.1%)
Blue138 (54.1%)
Hue330°
Saturation (HSL)19.66%
Lightness54.12%
Dominant channelRed
Hex per channelR A1 · G 73 · B 8A

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Every value on this page was computed from “a1738a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.