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Recognised as Colour

#4B221F

  • #4B221F
  • Red
  • Dark
  • Nearest: Black

#4B221F is a red with RGB values 75, 34, 31 and HSL 4°, 42%, 21%. It is a dark colour, so white text on it reaches 13.6:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#4B221F#4B221F
HEX#4B221F
RGBrgb(75, 34, 31)
RGB (0–1)0.2941, 0.1333, 0.1216
RGB percentages29.4%, 13.3%, 12.2%
HSLhsl(4.1, 41.5%, 20.8%)
HSV / HSBhsv(4.1, 58.7%, 29.4%)
CMYK0%, 54.7%, 58.7%, 70.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,923,935
CSS custom property--colour: #4B221F;

Brightness & contrast

Relative luminance0.02739WCAG 2.x, 0 is black and 1 is white
Perceived brightness49.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.57:1
Contrast with white13.57:1WCAG normal text: AAA
Contrast with black1.55:1WCAG normal text: Fail
Greyscale equivalent#2A2A2A
Inverted#B4DDE0

Colour vision & accessibility

Protanopia#2C291Fno red cones; affects about 1% of men; ΔE 20.3 from the original
Deuteranopia#36311Eno green cones; the most common form, about 1% of men; ΔE 20.4 from the original
Tritanopia#521C21no blue cones; rare, and affects men and women equally; ΔE 6.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.57:1WCAG large text: AAA
Contrast with black, large text1.55:1WCAG large text: Fail

Named colours

Nearest named CSS colourBlack (#000000)ΔE 29.05, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#1F484B
Analogous#4B1F32, #4B381F
Triadic#1F4B22, #221F4B
Split complementary#1F4B38, #1F324B
Tetradic#324B1F, #1F484B, #381F4B

Tints, shades & saturation

Lighter +40%#C57771
Lighter +30%#B6554D
Lighter +20%#93433D
Lighter +10%#6F322E
Darker −10%#271210
Darker −20%#030101
Darker −30%#000000
Darker −40%#000000
More saturated +25%#581712
Less saturated −25%#3E2D2C

Channel breakdown

R75
G34
B31
Red75 (29.4%)
Green34 (13.3%)
Blue31 (12.2%)
Hue4.09°
Saturation (HSL)41.51%
Lightness20.78%
Dominant channelRed
Hex per channelR 4B · G 22 · B 1F

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Every value on this page was computed from “4b221f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.