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Recognised as Colour

#313FFF

  • #313FFF
  • Blue
  • Dark
  • Nearest: Medium blue

#313FFF is a blue with RGB values 49, 63, 255 and HSL 236°, 100%, 60%. It is a dark colour, so white text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Medium blue.

Colour values

#313FFF#313FFF
HEX#313FFF
RGBrgb(49, 63, 255)
RGB (0–1)0.1922, 0.2471, 1
RGB percentages19.2%, 24.7%, 100%
HSLhsl(235.9, 100%, 59.6%)
HSV / HSBhsv(235.9, 80.8%, 100%)
CMYK80.8%, 75.3%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,227,647
CSS custom property--colour: #313FFF;

Brightness & contrast

Relative luminance0.11428WCAG 2.x, 0 is black and 1 is white
Perceived brightness102.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.39:1
Contrast with white6.39:1WCAG normal text: AA
Contrast with black3.29:1WCAG normal text: Fail
Greyscale equivalent#4A4A4A
Inverted#CEC000

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0069FFno red cones; affects about 1% of men; ΔE 31.2 from the original
Deuteranopia#0054FCno green cones; the most common form, about 1% of men; ΔE 16.4 from the original
Tritanopia#00799Dno blue cones; rare, and affects men and women equally; ΔE 101 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.39:1WCAG large text: AAA
Contrast with black, large text3.29:1WCAG large text: AA

Named colours

Medium blue · ΔE 17.2Blue violet · ΔE 22.1Blue · ΔE 24.6Dark violet · ΔE 29.1Dark orchid · ΔE 34.9Medium slateblue · ΔE 36.7
Nearest named CSS colourMedium blue (#0000CD)ΔE 17.15, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFF131
Analogous#31A6FF, #8A31FF
Triadic#FF313F, #3FFF31
Split complementary#FF8A31, #A6FF31
Tetradic#FF31A6, #FFF131, #31FF8A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FDFDFF
Lighter +30%#CACEFF
Lighter +20%#979EFF
Lighter +10%#646FFF
Darker −10%#0011FD
Darker −20%#000ECA
Darker −30%#000A97
Darker −40%#000764
More saturated +25%#313FFF
Less saturated −25%#4B55E5

Channel breakdown

R49
G63
B255
Red49 (19.2%)
Green63 (24.7%)
Blue255 (100%)
Hue235.92°
Saturation (HSL)100%
Lightness59.61%
Dominant channelBlue
Hex per channelR 31 · G 3F · B FF

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Every value on this page was computed from “313fff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.