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Recognised as Colour

#2C3137

  • #2C3137
  • Blue
  • Dark
  • Nearest: Dark slate grey

#2C3137 is a blue with RGB values 44, 49, 55 and HSL 213°, 11%, 19%. It is a dark colour, so white text on it reaches 13.1:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#2C3137#2C3137
HEX#2C3137
RGBrgb(44, 49, 55)
RGB (0–1)0.1725, 0.1922, 0.2157
RGB percentages17.3%, 19.2%, 21.6%
HSLhsl(212.7, 11.1%, 19.4%)
HSV / HSBhsv(212.7, 20%, 21.6%)
CMYK20%, 10.9%, 0%, 78.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,896,183
CSS custom property--colour: #2C3137;

Brightness & contrast

Relative luminance0.03008WCAG 2.x, 0 is black and 1 is white
Perceived brightness48.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.11:1
Contrast with white13.11:1WCAG normal text: AAA
Contrast with black1.6:1WCAG normal text: Fail
Greyscale equivalent#303030
Inverted#D3CEC8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2F3137no red cones; affects about 1% of men; ΔE 1.3 from the original
Deuteranopia#2E3037no green cones; the most common form, about 1% of men; ΔE 1.5 from the original
Tritanopia#293233no blue cones; rare, and affects men and women equally; ΔE 4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.11:1WCAG large text: AAA
Contrast with black, large text1.6:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 15.8Black · ΔE 20.6Dim grey · ΔE 24.8Slate grey · ΔE 33.3Gray · ΔE 33.8Light slate grey · ΔE 36.5
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 15.8, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#37322C
Analogous#2C3737, #2D2C37
Triadic#372C31, #31372C
Split complementary#372D2C, #37372C
Tetradic#372C37, #37322C, #2C372D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8C96A3
Lighter +30%#707D8C
Lighter +20%#596370
Lighter +10%#434A53
Darker −10%#15181B
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#203043
Less saturated −25%#323232

Channel breakdown

R44
G49
B55
Red44 (17.3%)
Green49 (19.2%)
Blue55 (21.6%)
Hue212.73°
Saturation (HSL)11.11%
Lightness19.41%
Dominant channelBlue
Hex per channelR 2C · G 31 · B 37

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Every value on this page was computed from “2c3137” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.