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Colour

#31415B

  • #31415B
  • Blue
  • Dark
  • Nearest: Dark slate grey

#31415B is a blue with RGB values 49, 65, 91 and HSL 217°, 30%, 27%. It is a dark colour, so white text on it reaches 10.3:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#31415B#31415B
HEX#31415B
RGBrgb(49, 65, 91)
RGB (0–1)0.1922, 0.2549, 0.3569
RGB percentages19.2%, 25.5%, 35.7%
HSLhsl(217.1, 30%, 27.5%)
HSV / HSBhsv(217.1, 46.2%, 35.7%)
CMYK46.2%, 28.6%, 0%, 64.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,227,995
CSS custom property--colour: #31415B;

Brightness & contrast

Relative luminance0.05189WCAG 2.x, 0 is black and 1 is white
Perceived brightness64.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.31:1
Contrast with white10.31:1WCAG normal text: AAA
Contrast with black2.04:1WCAG normal text: Fail
Greyscale equivalent#3F3F3F
Inverted#CEBEA4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#38435Cno red cones; affects about 1% of men; ΔE 2.1 from the original
Deuteranopia#333F5Ano green cones; the most common form, about 1% of men; ΔE 1.7 from the original
Tritanopia#22474Ano blue cones; rare, and affects men and women equally; ΔE 17.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.31:1WCAG large text: AAA
Contrast with black, large text2.04:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 19.4Dim grey · ΔE 24.5Slate grey · ΔE 26.7Light slate grey · ΔE 29.6Steel blue · ΔE 29.7Gray · ΔE 31.6
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 19.45, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5B4B31
Analogous#31565B, #36315B
Triadic#5B3141, #415B31
Split complementary#5B3631, #565B31
Tetradic#5B3156, #5B4B31, #315B36

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#93A6C5
Lighter +30%#728BB3
Lighter +20%#55709D
Lighter +10%#43597C
Darker −10%#1F293A
Darker −20%#0D1219
Darker −30%#000000
Darker −40%#000000
More saturated +25%#203D6D
Less saturated −25%#43454A

Channel breakdown

R49
G65
B91
Red49 (19.2%)
Green65 (25.5%)
Blue91 (35.7%)
Hue217.14°
Saturation (HSL)30%
Lightness27.45%
Dominant channelBlue
Hex per channelR 31 · G 41 · B 5B

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Every value on this page was computed from “31415b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.