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Colour

#2F3451

  • #2F3451
  • Blue
  • Dark
  • Nearest: Dark slate grey

#2F3451 is a blue with RGB values 47, 52, 81 and HSL 231°, 27%, 25%. It is a dark colour, so white text on it reaches 12.1:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#2F3451#2F3451
HEX#2F3451
RGBrgb(47, 52, 81)
RGB (0–1)0.1843, 0.2039, 0.3176
RGB percentages18.4%, 20.4%, 31.8%
HSLhsl(231.2, 26.6%, 25.1%)
HSV / HSBhsv(231.2, 42%, 31.8%)
CMYK42%, 35.8%, 0%, 68.2%naive device-independent conversion; real print needs an ICC profile
24-bit integer3,093,585
CSS custom property--colour: #2F3451;

Brightness & contrast

Relative luminance0.03654WCAG 2.x, 0 is black and 1 is white
Perceived brightness54.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.13:1
Contrast with white12.13:1WCAG normal text: AAA
Contrast with black1.73:1WCAG normal text: Fail
Greyscale equivalent#353535
Inverted#D0CBAE

Colour vision & accessibility

Protanopia#2A3752no red cones; affects about 1% of men; ΔE 3.4 from the original
Deuteranopia#283450no green cones; the most common form, about 1% of men; ΔE 2.6 from the original
Tritanopia#253A3Eno blue cones; rare, and affects men and women equally; ΔE 18.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.13:1WCAG large text: AAA
Contrast with black, large text1.73:1WCAG large text: Fail

Named colours

Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 24.83, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#514C2F
Analogous#2F4551, #3B2F51
Triadic#512F34, #34512F
Split complementary#513B2F, #45512F
Tetradic#512F45, #514C2F, #2F513B

Tints, shades & saturation

Lighter +40%#8E95BE
Lighter +30%#6E77AB
Lighter +20%#545D92
Lighter +10%#424971
Darker −10%#1C1F31
Darker −20%#0A0B10
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1F2961
Less saturated −25%#3F3F41

Channel breakdown

R47
G52
B81
Red47 (18.4%)
Green52 (20.4%)
Blue81 (31.8%)
Hue231.18°
Saturation (HSL)26.56%
Lightness25.1%
Dominant channelBlue
Hex per channelR 2F · G 34 · B 51

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Every value on this page was computed from “2f3451” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.