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Recognised as Colour

#333B39

  • #333B39
  • Grey
  • Dark
  • Nearest: Dark slate grey

#333B39 is a grey with RGB values 51, 59, 57 and HSL 165°, 7%, 22%. It is a dark colour, so white text on it reaches 11.5:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#333B39#333B39
HEX#333B39
RGBrgb(51, 59, 57)
RGB (0–1)0.2, 0.2314, 0.2235
RGB percentages20%, 23.1%, 22.4%
HSLhsl(165, 7.3%, 21.6%)
HSV / HSBhsv(165, 13.6%, 23.1%)
CMYK13.6%, 0%, 3.4%, 76.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,357,497
CSS custom property--colour: #333B39;

Brightness & contrast

Relative luminance0.04127WCAG 2.x, 0 is black and 1 is white
Perceived brightness56.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.5:1
Contrast with white11.5:1WCAG normal text: AAA
Contrast with black1.83:1WCAG normal text: Fail
Greyscale equivalent#393939
Inverted#CCC4C6

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3A3A39no red cones; affects about 1% of men; ΔE 3.7 from the original
Deuteranopia#393939no green cones; the most common form, about 1% of men; ΔE 3.8 from the original
Tritanopia#313B3Ano blue cones; rare, and affects men and women equally; ΔE 1.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.5:1WCAG large text: AAA
Contrast with black, large text1.83:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 11.3Dim grey · ΔE 20.7Black · ΔE 24.4Gray · ΔE 29.7Slate grey · ΔE 30.7Light slate grey · ΔE 33.8
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 11.33, a distinctly different colour
Hue familygrey
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#3B3335
Analogous#333B35, #33393B
Triadic#39333B, #3B3933
Split complementary#3B3339, #3B3533
Tetradic#35333B, #3B3335, #393B33

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#96A4A1
Lighter +30%#7B8C88
Lighter +20%#62726E
Lighter +10%#4B5653
Darker −10%#1B201F
Darker −20%#040404
Darker −30%#000000
Darker −40%#000000
More saturated +25%#254940
Less saturated −25%#373737

Channel breakdown

R51
G59
B57
Red51 (20%)
Green59 (23.1%)
Blue57 (22.4%)
Hue165°
Saturation (HSL)7.27%
Lightness21.57%
Dominant channelGreen
Hex per channelR 33 · G 3B · B 39

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Every value on this page was computed from “333b39” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.