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Recognised as Colour

#671F23

  • #671F23
  • Red
  • Dark
  • Nearest: Brown

#671F23 is a red with RGB values 103, 31, 35 and HSL 357°, 54%, 26%. It is a dark colour, so white text on it reaches 11.7:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#671F23#671F23
HEX#671F23
RGBrgb(103, 31, 35)
RGB (0–1)0.4039, 0.1216, 0.1373
RGB percentages40.4%, 12.2%, 13.7%
HSLhsl(356.7, 53.7%, 26.3%)
HSV / HSBhsv(356.7, 69.9%, 40.4%)
CMYK0%, 69.9%, 66%, 59.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,758,179
CSS custom property--colour: #671F23;

Brightness & contrast

Relative luminance0.03985WCAG 2.x, 0 is black and 1 is white
Perceived brightness62.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.69:1
Contrast with white11.69:1WCAG normal text: AAA
Contrast with black1.8:1WCAG normal text: Fail
Greyscale equivalent#2F2F2F
Inverted#98E0DC

Colour vision & accessibility

Protanopia#322F23no red cones; affects about 1% of men; ΔE 34.6 from the original
Deuteranopia#443E21no green cones; the most common form, about 1% of men; ΔE 35 from the original
Tritanopia#710F21no blue cones; rare, and affects men and women equally; ΔE 9.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.69:1WCAG large text: AAA
Contrast with black, large text1.8:1WCAG large text: Fail

Named colours

Nearest named CSS colourBrown (#A52A2A)ΔE 26.83, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#1F6763
Analogous#671F47, #673F1F
Triadic#23671F, #1F2367
Split complementary#1F673F, #1F4767
Tetradic#47671F, #1F6763, #3F1F67

Tints, shades & saturation

Lighter +40%#D77B80
Lighter +30%#CB545A
Lighter +20%#B5373E
Lighter +10%#8E2B30
Darker −10%#401316
Darker −20%#190708
Darker −30%#000000
Darker −40%#000000
More saturated +25%#780E14
Less saturated −25%#563032

Channel breakdown

R103
G31
B35
Red103 (40.4%)
Green31 (12.2%)
Blue35 (13.7%)
Hue356.67°
Saturation (HSL)53.73%
Lightness26.27%
Dominant channelRed
Hex per channelR 67 · G 1F · B 23

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Every value on this page was computed from “671f23” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.