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Colour

#131F59

  • #131F59
  • Blue
  • Dark
  • Nearest: Dark slateblue

#131F59 is a blue with RGB values 19, 31, 89 and HSL 230°, 65%, 21%. It is a dark colour, so white text on it reaches 15.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#131F59#131F59
HEX#131F59
RGBrgb(19, 31, 89)
RGB (0–1)0.0745, 0.1216, 0.349
RGB percentages7.5%, 12.2%, 34.9%
HSLhsl(229.7, 64.8%, 21.2%)
HSV / HSBhsv(229.7, 78.7%, 34.9%)
CMYK78.7%, 65.2%, 0%, 65.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,253,209
CSS custom property--colour: #131F59;

Brightness & contrast

Relative luminance0.0184WCAG 2.x, 0 is black and 1 is white
Perceived brightness39.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.35:1
Contrast with white15.35:1WCAG normal text: AAA
Contrast with black1.37:1WCAG normal text: Fail
Greyscale equivalent#212121
Inverted#ECE0A6

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00285Bno red cones; affects about 1% of men; ΔE 8.6 from the original
Deuteranopia#002258no green cones; the most common form, about 1% of men; ΔE 4.9 from the original
Tritanopia#002E38no blue cones; rare, and affects men and women equally; ΔE 38.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text15.35:1WCAG large text: AAA
Contrast with black, large text1.37:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 19Midnight blue · ΔE 19.1Rebecca purple · ΔE 32.7Indigo · ΔE 38.2Navy · ΔE 41Slate blue · ΔE 41.6
Nearest named CSS colourDark slateblue (#483D8B)ΔE 19, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#594D13
Analogous#134259, #2A1359
Triadic#59131F, #1F5913
Split complementary#592A13, #425913
Tetradic#591342, #594D13, #13592A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5C72DC
Lighter +30%#324DD3
Lighter +20%#253CAD
Lighter +10%#1C2E83
Darker −10%#0A102F
Darker −20%#010205
Darker −30%#000000
Darker −40%#000000
More saturated +25%#051667
Less saturated −25%#21284B

Channel breakdown

R19
G31
B89
Red19 (7.5%)
Green31 (12.2%)
Blue89 (34.9%)
Hue229.71°
Saturation (HSL)64.81%
Lightness21.18%
Dominant channelBlue
Hex per channelR 13 · G 1F · B 59

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Every value on this page was computed from “131f59” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.