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Recognised as Colour

#0B3137

  • #0B3137
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#0B3137 is a cyan with RGB values 11, 49, 55 and HSL 188°, 67%, 13%. It is a dark colour, so white text on it reaches 13.9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#0B3137#0B3137
HEX#0B3137
RGBrgb(11, 49, 55)
RGB (0–1)0.0431, 0.1922, 0.2157
RGB percentages4.3%, 19.2%, 21.6%
HSLhsl(188.2, 66.7%, 12.9%)
HSV / HSBhsv(188.2, 80%, 21.6%)
CMYK80%, 10.9%, 0%, 78.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer733,495
CSS custom property--colour: #0B3137;

Brightness & contrast

Relative luminance0.02544WCAG 2.x, 0 is black and 1 is white
Perceived brightness42.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.92:1
Contrast with white13.92:1WCAG normal text: AAA
Contrast with black1.51:1WCAG normal text: Fail
Greyscale equivalent#292929
Inverted#F4CEC8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2C2F37no red cones; affects about 1% of men; ΔE 11.8 from the original
Deuteranopia#262A37no green cones; the most common form, about 1% of men; ΔE 12.7 from the original
Tritanopia#003433no blue cones; rare, and affects men and women equally; ΔE 6.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.92:1WCAG large text: AAA
Contrast with black, large text1.51:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 13.8Black · ΔE 22.4Dim grey · ΔE 29.4Teal · ΔE 35.2Slate grey · ΔE 35.9Gray · ΔE 37.8
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 13.76, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#37110B
Analogous#0B3727, #0B1B37
Triadic#370B31, #31370B
Split complementary#370B1B, #37270B
Tetradic#270B37, #37110B, #1B370B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#37C1D7
Lighter +30%#25A3B7
Lighter +20%#1C7D8C
Lighter +10%#135762
Darker −10%#030B0D
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#03373F
Less saturated −25%#132B2F

Channel breakdown

R11
G49
B55
Red11 (4.3%)
Green49 (19.2%)
Blue55 (21.6%)
Hue188.18°
Saturation (HSL)66.67%
Lightness12.94%
Dominant channelBlue
Hex per channelR 0B · G 31 · B 37

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Every value on this page was computed from “0b3137” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.