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Recognised as Colour

#393C57

  • #393C57
  • Blue
  • Dark
  • Nearest: Dark slate grey

#393C57 is a blue with RGB values 57, 60, 87 and HSL 234°, 21%, 28%. It is a dark colour, so white text on it reaches 10.7:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#393C57#393C57
HEX#393C57
RGBrgb(57, 60, 87)
RGB (0–1)0.2235, 0.2353, 0.3412
RGB percentages22.4%, 23.5%, 34.1%
HSLhsl(234, 20.8%, 28.2%)
HSV / HSBhsv(234, 34.5%, 34.1%)
CMYK34.5%, 31%, 0%, 65.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,750,999
CSS custom property--colour: #393C57;

Brightness & contrast

Relative luminance0.0479WCAG 2.x, 0 is black and 1 is white
Perceived brightness62.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.73:1
Contrast with white10.73:1WCAG normal text: AAA
Contrast with black1.96:1WCAG normal text: Fail
Greyscale equivalent#3D3D3D
Inverted#C6C3A8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#343F58no red cones; affects about 1% of men; ΔE 3.4 from the original
Deuteranopia#323D56no green cones; the most common form, about 1% of men; ΔE 3.3 from the original
Tritanopia#314146no blue cones; rare, and affects men and women equally; ΔE 16 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.73:1WCAG large text: AAA
Contrast with black, large text1.96:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 22.5Dim grey · ΔE 25.4Slate grey · ΔE 28.6Light slate grey · ΔE 31.4Black · ΔE 31.5Steel blue · ΔE 32.2
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 22.55, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#575439
Analogous#394B57, #453957
Triadic#57393C, #3C5739
Split complementary#574539, #4B5739
Tetradic#57394B, #575439, #395745

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9DA1BF
Lighter +30%#7E83AB
Lighter +20%#616795
Lighter +10%#4D5176
Darker −10%#252738
Darker −20%#111119
Darker −30%#000000
Darker −40%#000000
More saturated +25%#272E69
Less saturated −25%#484848

Channel breakdown

R57
G60
B87
Red57 (22.4%)
Green60 (23.5%)
Blue87 (34.1%)
Hue234°
Saturation (HSL)20.83%
Lightness28.24%
Dominant channelBlue
Hex per channelR 39 · G 3C · B 57

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Every value on this page was computed from “393c57” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.