Nerdulator> put something in

Recognised as Colour

#A71F29

  • #A71F29
  • Red
  • Dark
  • Nearest: Brown

#A71F29 is a red with RGB values 167, 31, 41 and HSL 356°, 69%, 39%. It is a dark colour, so white text on it reaches 7.3:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#A71F29#A71F29
HEX#A71F29
RGBrgb(167, 31, 41)
RGB (0–1)0.6549, 0.1216, 0.1608
RGB percentages65.5%, 12.2%, 16.1%
HSLhsl(355.6, 68.7%, 38.8%)
HSV / HSBhsv(355.6, 81.4%, 65.5%)
CMYK0%, 81.4%, 75.4%, 34.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,952,489
CSS custom property--colour: #A71F29;

Brightness & contrast

Relative luminance0.09356WCAG 2.x, 0 is black and 1 is white
Perceived brightness95.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.31:1
Contrast with white7.31:1WCAG normal text: AAA
Contrast with black2.87:1WCAG normal text: Fail
Greyscale equivalent#3D3D3D
Inverted#58E0D6

Colour vision & accessibility

Protanopia#4A4428no red cones; affects about 1% of men; ΔE 57.9 from the original
Deuteranopia#6C6124no green cones; the most common form, about 1% of men; ΔE 57.8 from the original
Tritanopia#B80024no blue cones; rare, and affects men and women equally; ΔE 11.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.31:1WCAG large text: AAA
Contrast with black, large text2.87:1WCAG large text: Fail

Named colours

Nearest named CSS colourBrown (#A52A2A)ΔE 4.17, a close match
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#1FA79D
Analogous#A71F6D, #A7591F
Triadic#29A71F, #1F29A7
Split complementary#1FA759, #1F6DA7
Tetradic#6DA71F, #1FA79D, #591FA7

Tints, shades & saturation

Lighter +40%#EEA4A9
Lighter +30%#E67981
Lighter +20%#DE4E58
Lighter +10%#D22734
Darker −10%#7C171E
Darker −20%#510F14
Darker −30%#260709
Darker −40%#000000
More saturated +25%#C00614
Less saturated −25%#8E383E

Channel breakdown

R167
G31
B41
Red167 (65.5%)
Green31 (12.2%)
Blue41 (16.1%)
Hue355.59°
Saturation (HSL)68.69%
Lightness38.82%
Dominant channelRed
Hex per channelR A7 · G 1F · B 29

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “a71f29” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.