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Recognised as Colour

#351F21

  • #351F21
  • Red
  • Dark
  • Nearest: Black

#351F21 is a red with RGB values 53, 31, 33 and HSL 355°, 26%, 16%. It is a dark colour, so white text on it reaches 15.3:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#351F21#351F21
HEX#351F21
RGBrgb(53, 31, 33)
RGB (0–1)0.2078, 0.1216, 0.1294
RGB percentages20.8%, 12.2%, 12.9%
HSLhsl(354.5, 26.2%, 16.5%)
HSV / HSBhsv(354.5, 41.5%, 20.8%)
CMYK0%, 41.5%, 37.7%, 79.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,481,377
CSS custom property--colour: #351F21;

Brightness & contrast

Relative luminance0.01847WCAG 2.x, 0 is black and 1 is white
Perceived brightness39.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.34:1
Contrast with white15.34:1WCAG normal text: AAA
Contrast with black1.37:1WCAG normal text: Fail
Greyscale equivalent#242424
Inverted#CAE0DE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#232221no red cones; affects about 1% of men; ΔE 11.1 from the original
Deuteranopia#282721no green cones; the most common form, about 1% of men; ΔE 12 from the original
Tritanopia#391D20no blue cones; rare, and affects men and women equally; ΔE 3.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text15.34:1WCAG large text: AAA
Contrast with black, large text1.37:1WCAG large text: Fail

Named colours

Black · ΔE 18.6Dark slate grey · ΔE 29Dim grey · ΔE 31.9Gray · ΔE 40.6Slate grey · ΔE 42.6Light slate grey · ΔE 45.6
Nearest named CSS colourBlack (#000000)ΔE 18.61, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#1F3533
Analogous#351F2C, #35281F
Triadic#21351F, #1F2135
Split complementary#1F3528, #1F2C35
Tetradic#2C351F, #1F3533, #281F35

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#AD7378
Lighter +30%#96575D
Lighter +20%#754549
Lighter +10%#553235
Darker −10%#150C0D
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#3F1418
Less saturated −25%#2A292A

Channel breakdown

R53
G31
B33
Red53 (20.8%)
Green31 (12.2%)
Blue33 (12.9%)
Hue354.55°
Saturation (HSL)26.19%
Lightness16.47%
Dominant channelRed
Hex per channelR 35 · G 1F · B 21

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Every value on this page was computed from “351f21” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.