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Recognised as Colour

#393A51

  • #393A51
  • Blue
  • Dark
  • Nearest: Dark slate grey

#393A51 is a blue with RGB values 57, 58, 81 and HSL 238°, 17%, 27%. It is a dark colour, so white text on it reaches 11.1:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#393A51#393A51
HEX#393A51
RGBrgb(57, 58, 81)
RGB (0–1)0.2235, 0.2275, 0.3176
RGB percentages22.4%, 22.7%, 31.8%
HSLhsl(237.5, 17.4%, 27.1%)
HSV / HSBhsv(237.5, 29.6%, 31.8%)
CMYK29.6%, 28.4%, 0%, 68.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,750,481
CSS custom property--colour: #393A51;

Brightness & contrast

Relative luminance0.0449WCAG 2.x, 0 is black and 1 is white
Perceived brightness60.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.06:1
Contrast with white11.06:1WCAG normal text: AAA
Contrast with black1.9:1WCAG normal text: Fail
Greyscale equivalent#3B3B3B
Inverted#C6C5AE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#343D52no red cones; affects about 1% of men; ΔE 3.5 from the original
Deuteranopia#333B50no green cones; the most common form, about 1% of men; ΔE 3.1 from the original
Tritanopia#333E42no blue cones; rare, and affects men and women equally; ΔE 13.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.06:1WCAG large text: AAA
Contrast with black, large text1.9:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 21.1Dim grey · ΔE 24.4Slate grey · ΔE 28.9Black · ΔE 29.4Light slate grey · ΔE 31.8Gray · ΔE 32.1
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 21.07, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#515039
Analogous#394651, #443951
Triadic#51393A, #3A5139
Split complementary#514439, #465139
Tetradic#513946, #515039, #395144

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9C9EBA
Lighter +30%#7E80A5
Lighter +20%#63658D
Lighter +10%#4E4F6F
Darker −10%#242533
Darker −20%#0F0F15
Darker −30%#000000
Darker −40%#000000
More saturated +25%#282A62
Less saturated −25%#454545

Channel breakdown

R57
G58
B81
Red57 (22.4%)
Green58 (22.7%)
Blue81 (31.8%)
Hue237.5°
Saturation (HSL)17.39%
Lightness27.06%
Dominant channelBlue
Hex per channelR 39 · G 3A · B 51

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Every value on this page was computed from “393a51” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.