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Recognised as Colour

#3D1921

  • #3D1921
  • Red
  • Dark
  • Nearest: Black

#3D1921 is a red with RGB values 61, 25, 33 and HSL 347°, 42%, 17%. It is a dark colour, so white text on it reaches 15.4:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#3D1921#3D1921
HEX#3D1921
RGBrgb(61, 25, 33)
RGB (0–1)0.2392, 0.098, 0.1294
RGB percentages23.9%, 9.8%, 12.9%
HSLhsl(346.7, 41.9%, 16.9%)
HSV / HSBhsv(346.7, 59%, 23.9%)
CMYK0%, 59%, 45.9%, 76.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,004,129
CSS custom property--colour: #3D1921;

Brightness & contrast

Relative luminance0.01797WCAG 2.x, 0 is black and 1 is white
Perceived brightness40 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.45:1
Contrast with white15.45:1WCAG normal text: AAA
Contrast with black1.36:1WCAG normal text: Fail
Greyscale equivalent#212121
Inverted#C2E6DE

Colour vision & accessibility

Protanopia#202021no red cones; affects about 1% of men; ΔE 18.9 from the original
Deuteranopia#292720no green cones; the most common form, about 1% of men; ΔE 19.4 from the original
Tritanopia#42151Cno blue cones; rare, and affects men and women equally; ΔE 5.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text15.45:1WCAG large text: AAA
Contrast with black, large text1.36:1WCAG large text: Fail

Named colours

Nearest named CSS colourBlack (#000000)ΔE 23.73, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#193D35
Analogous#3D1933, #3D2319
Triadic#213D19, #19213D
Split complementary#193D23, #19333D
Tetradic#333D19, #193D35, #23193D

Tints, shades & saturation

Lighter +40%#BF6377
Lighter +30%#AA455C
Lighter +20%#853748
Lighter +10%#612835
Darker −10%#190A0D
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#480E1B
Less saturated −25%#322427

Channel breakdown

R61
G25
B33
Red61 (23.9%)
Green25 (9.8%)
Blue33 (12.9%)
Hue346.67°
Saturation (HSL)41.86%
Lightness16.86%
Dominant channelRed
Hex per channelR 3D · G 19 · B 21

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Every value on this page was computed from “3d1921” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.