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Colour

#31255D

  • #31255D
  • Blue
  • Dark
  • Nearest: Dark slateblue

#31255D is a blue with RGB values 49, 37, 93 and HSL 253°, 43%, 25%. It is a dark colour, so white text on it reaches 13.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#31255D#31255D
HEX#31255D
RGBrgb(49, 37, 93)
RGB (0–1)0.1922, 0.1451, 0.3647
RGB percentages19.2%, 14.5%, 36.5%
HSLhsl(252.9, 43.1%, 25.5%)
HSV / HSBhsv(252.9, 60.2%, 36.5%)
CMYK47.3%, 60.2%, 0%, 63.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,220,829
CSS custom property--colour: #31255D;

Brightness & contrast

Relative luminance0.02766WCAG 2.x, 0 is black and 1 is white
Perceived brightness50.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.52:1
Contrast with white13.52:1WCAG normal text: AAA
Contrast with black1.55:1WCAG normal text: Fail
Greyscale equivalent#2C2C2C
Inverted#CEDAA2

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#062F5Fno red cones; affects about 1% of men; ΔE 14.2 from the original
Deuteranopia#072D5Cno green cones; the most common form, about 1% of men; ΔE 13.9 from the original
Tritanopia#24313Dno blue cones; rare, and affects men and women equally; ΔE 32.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.52:1WCAG large text: AAA
Contrast with black, large text1.55:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 16.3Midnight blue · ΔE 20.9Rebecca purple · ΔE 29.9Indigo · ΔE 37.3Purple · ΔE 39.4Slate blue · ΔE 39.8
Nearest named CSS colourDark slateblue (#483D8B)ΔE 16.35, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#515D25
Analogous#25355D, #4D255D
Triadic#5D3125, #255D31
Split complementary#5D4D25, #355D25
Tetradic#5D2535, #515D25, #255D4D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9181CD
Lighter +30%#725DBE
Lighter +20%#5742A6
Lighter +10%#443481
Darker −10%#1E1639
Darker −20%#0B0814
Darker −30%#000000
Darker −40%#000000
More saturated +25%#28156D
Less saturated −25%#3A354D

Channel breakdown

R49
G37
B93
Red49 (19.2%)
Green37 (14.5%)
Blue93 (36.5%)
Hue252.86°
Saturation (HSL)43.08%
Lightness25.49%
Dominant channelBlue
Hex per channelR 31 · G 25 · B 5D

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Every value on this page was computed from “31255d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.