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Recognised as Colour

#33131A

  • #33131A
  • Red
  • Dark
  • Nearest: Black

#33131A is a red with RGB values 51, 19, 26 and HSL 347°, 46%, 14%. It is a dark colour, so white text on it reaches 16.8:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#33131A#33131A
HEX#33131A
RGBrgb(51, 19, 26)
RGB (0–1)0.2, 0.0745, 0.102
RGB percentages20%, 7.5%, 10.2%
HSLhsl(346.9, 45.7%, 13.7%)
HSV / HSBhsv(346.9, 62.7%, 20%)
CMYK0%, 62.7%, 49%, 80%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,347,226
CSS custom property--colour: #33131A;

Brightness & contrast

Relative luminance0.01244WCAG 2.x, 0 is black and 1 is white
Perceived brightness32.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.82:1
Contrast with white16.82:1WCAG normal text: AAA
Contrast with black1.25:1WCAG normal text: Fail
Greyscale equivalent#1A1A1A
Inverted#CCECE5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#19191Ano red cones; affects about 1% of men; ΔE 17.3 from the original
Deuteranopia#212019no green cones; the most common form, about 1% of men; ΔE 18.3 from the original
Tritanopia#381016no blue cones; rare, and affects men and women equally; ΔE 4.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.82:1WCAG large text: AAA
Contrast with black, large text1.25:1WCAG large text: Fail

Named colours

Black · ΔE 20.4Dark slate grey · ΔE 35.8Dim grey · ΔE 37.7Gray · ΔE 46.1Saddle brown · ΔE 47.5Slate grey · ΔE 48
Nearest named CSS colourBlack (#000000)ΔE 20.4, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#13332C
Analogous#33132A, #331C13
Triadic#1A3313, #131A33
Split complementary#13331C, #132A33
Tetradic#2A3313, #13332C, #1C1333

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BF536B
Lighter +30%#A23D53
Lighter +20%#7D2F40
Lighter +10%#58212D
Darker −10%#0E0507
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#3C0A15
Less saturated −25%#2A1C1F

Channel breakdown

R51
G19
B26
Red51 (20%)
Green19 (7.5%)
Blue26 (10.2%)
Hue346.88°
Saturation (HSL)45.71%
Lightness13.73%
Dominant channelRed
Hex per channelR 33 · G 13 · B 1A

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Every value on this page was computed from “33131a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.