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Colour

#5B31FF

  • #5B31FF
  • Blue
  • Dark
  • Nearest: Medium blue

#5B31FF is a blue with RGB values 91, 49, 255 and HSL 252°, 100%, 60%. It is a dark colour, so white text on it reaches 6.3:1 contrast (AA for normal text). The nearest named colour is Medium blue.

Colour values

#5B31FF#5B31FF
HEX#5B31FF
RGBrgb(91, 49, 255)
RGB (0–1)0.3569, 0.1922, 1
RGB percentages35.7%, 19.2%, 100%
HSLhsl(252.2, 100%, 59.6%)
HSV / HSBhsv(252.2, 80.8%, 100%)
CMYK64.3%, 80.8%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,976,575
CSS custom property--colour: #5B31FF;

Brightness & contrast

Relative luminance0.11641WCAG 2.x, 0 is black and 1 is white
Perceived brightness106.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.31:1
Contrast with white6.31:1WCAG normal text: AA
Contrast with black3.33:1WCAG normal text: Fail
Greyscale equivalent#494949
Inverted#A4CE00

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0067FFno red cones; affects about 1% of men; ΔE 37.8 from the original
Deuteranopia#0058FBno green cones; the most common form, about 1% of men; ΔE 28.4 from the original
Tritanopia#00729Bno blue cones; rare, and affects men and women equally; ΔE 103.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.31:1WCAG large text: AAA
Contrast with black, large text3.33:1WCAG large text: AA

Named colours

Medium blue · ΔE 16Blue · ΔE 19Blue violet · ΔE 19.2Dark violet · ΔE 24.5Dark orchid · ΔE 34.2Dark blue · ΔE 40.8
Nearest named CSS colourMedium blue (#0000CD)ΔE 16.01, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D5FF31
Analogous#316EFF, #C231FF
Triadic#FF5B31, #31FF5B
Split complementary#FFC231, #6EFF31
Tetradic#FF316E, #D5FF31, #31FFC2

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FDFDFF
Lighter +30%#D5CAFF
Lighter +20%#AC97FF
Lighter +10%#8464FF
Darker −10%#3400FD
Darker −20%#2900CA
Darker −30%#1F0097
Darker −40%#140064
More saturated +25%#5B31FF
Less saturated −25%#6A4BE5

Channel breakdown

R91
G49
B255
Red91 (35.7%)
Green49 (19.2%)
Blue255 (100%)
Hue252.23°
Saturation (HSL)100%
Lightness59.61%
Dominant channelBlue
Hex per channelR 5B · G 31 · B FF

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Every value on this page was computed from “5b31ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.