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Colour

#373C49

  • #373C49
  • Blue
  • Dark
  • Nearest: Dark slate grey

#373C49 is a blue with RGB values 55, 60, 73 and HSL 223°, 14%, 25%. It is a dark colour, so white text on it reaches 11:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#373C49#373C49
HEX#373C49
RGBrgb(55, 60, 73)
RGB (0–1)0.2157, 0.2353, 0.2863
RGB percentages21.6%, 23.5%, 28.6%
HSLhsl(223.3, 14.1%, 25.1%)
HSV / HSBhsv(223.3, 24.7%, 28.6%)
CMYK24.7%, 17.8%, 0%, 71.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,619,913
CSS custom property--colour: #373C49;

Brightness & contrast

Relative luminance0.04525WCAG 2.x, 0 is black and 1 is white
Perceived brightness60.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.02:1
Contrast with white11.02:1WCAG normal text: AAA
Contrast with black1.9:1WCAG normal text: Fail
Greyscale equivalent#3C3C3C
Inverted#C8C3B6

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#383D4Ano red cones; affects about 1% of men; ΔE 0.4 from the original
Deuteranopia#373B49no green cones; the most common form, about 1% of men; ΔE 0.9 from the original
Tritanopia#333E40no blue cones; rare, and affects men and women equally; ΔE 7.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.02:1WCAG large text: AAA
Contrast with black, large text1.9:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 15.1Dim grey · ΔE 21Black · ΔE 26.8Slate grey · ΔE 27.8Gray · ΔE 29.6Light slate grey · ΔE 30.9
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 15.1, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#494437
Analogous#374549, #3B3749
Triadic#49373C, #3C4937
Split complementary#493B37, #454937
Tetradic#493745, #494437, #37493B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#99A0B3
Lighter +30%#7C859D
Lighter +20%#636C83
Lighter +10%#4D5466
Darker −10%#21242C
Darker −20%#0B0C0F
Darker −30%#000000
Darker −40%#000000
More saturated +25%#273559
Less saturated −25%#404040

Channel breakdown

R55
G60
B73
Red55 (21.6%)
Green60 (23.5%)
Blue73 (28.6%)
Hue223.33°
Saturation (HSL)14.06%
Lightness25.1%
Dominant channelBlue
Hex per channelR 37 · G 3C · B 49

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Every value on this page was computed from “373c49” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.