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Recognised as Colour

#A13618

  • #A13618
  • Red
  • Dark
  • Nearest: Brown

#A13618 is a red with RGB values 161, 54, 24 and HSL 13°, 74%, 36%. It is a dark colour, so white text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Brown.

Colour values

#A13618#A13618
HEX#A13618
RGBrgb(161, 54, 24)
RGB (0–1)0.6314, 0.2118, 0.0941
RGB percentages63.1%, 21.2%, 9.4%
HSLhsl(13.1, 74.1%, 36.3%)
HSV / HSBhsv(13.1, 85.1%, 63.1%)
CMYK0%, 66.5%, 85.1%, 36.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,565,144
CSS custom property--colour: #A13618;

Brightness & contrast

Relative luminance0.10281WCAG 2.x, 0 is black and 1 is white
Perceived brightness97.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.87:1
Contrast with white6.87:1WCAG normal text: AA
Contrast with black3.06:1WCAG normal text: Fail
Greyscale equivalent#4B4B4B
Inverted#5EC9E7

Colour vision & accessibility

Protanopia#554B13no red cones; affects about 1% of men; ΔE 47 from the original
Deuteranopia#706312no green cones; the most common form, about 1% of men; ΔE 47 from the original
Tritanopia#B21530no blue cones; rare, and affects men and women equally; ΔE 20.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.87:1WCAG large text: AAA
Contrast with black, large text3.06:1WCAG large text: AA

Named colours

Nearest named CSS colourBrown (#A52A2A)ΔE 12.47, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#1883A1
Analogous#A1183F, #A17B18
Triadic#18A136, #3618A1
Split complementary#18A17A, #183FA1
Tetradic#3FA118, #1883A1, #7A18A1

Tints, shades & saturation

Lighter +40%#EFA996
Lighter +30%#E98569
Lighter +20%#E2613D
Lighter +10%#CD451F
Darker −10%#752711
Darker −20%#48180B
Darker −30%#1C0904
Darker −40%#000000
More saturated +25%#B82901
Less saturated −25%#8A432F

Channel breakdown

R161
G54
B24
Red161 (63.1%)
Green54 (21.2%)
Blue24 (9.4%)
Hue13.14°
Saturation (HSL)74.05%
Lightness36.27%
Dominant channelRed
Hex per channelR A1 · G 36 · B 18

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Every value on this page was computed from “a13618” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.