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Recognised as Colour

#515FFF

  • #515FFF
  • Blue
  • Dark
  • Nearest: Medium slateblue

#515FFF is a blue with RGB values 81, 95, 255 and HSL 235°, 100%, 66%. It is a dark colour, so white text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Medium slateblue.

Colour values

#515FFF#515FFF
HEX#515FFF
RGBrgb(81, 95, 255)
RGB (0–1)0.3176, 0.3725, 1
RGB percentages31.8%, 37.3%, 100%
HSLhsl(235.2, 100%, 65.9%)
HSV / HSBhsv(235.2, 68.2%, 100%)
CMYK68.2%, 62.7%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,332,991
CSS custom property--colour: #515FFF;

Brightness & contrast

Relative luminance0.17154WCAG 2.x, 0 is black and 1 is white
Perceived brightness121.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.74:1
Contrast with white4.74:1WCAG normal text: AA
Contrast with black4.43:1WCAG normal text: Fail
Greyscale equivalent#686868
Inverted#AEA000

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#007BFFno red cones; affects about 1% of men; ΔE 24.7 from the original
Deuteranopia#006BFCno green cones; the most common form, about 1% of men; ΔE 14.1 from the original
Tritanopia#0088A6no blue cones; rare, and affects men and women equally; ΔE 85.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.74:1WCAG large text: AAA
Contrast with black, large text4.43:1WCAG large text: AA

Named colours

Medium slateblue · ΔE 16.5Royal blue · ΔE 24.3Slate blue · ΔE 25Blue violet · ΔE 26.6Dark orchid · ΔE 29.6Medium purple · ΔE 32.6
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 16.49, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFF151
Analogous#51B6FF, #9A51FF
Triadic#FF515F, #5FFF51
Split complementary#FF9A51, #B6FF51
Tetradic#FF51B6, #FFF151, #51FF9A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#EAECFF
Lighter +20%#B7BDFF
Lighter +10%#848EFF
Darker −10%#1E30FF
Darker −20%#0013EA
Darker −30%#000FB7
Darker −40%#000B84
More saturated +25%#515FFF
Less saturated −25%#6771E9

Channel breakdown

R81
G95
B255
Red81 (31.8%)
Green95 (37.3%)
Blue255 (100%)
Hue235.17°
Saturation (HSL)100%
Lightness65.88%
Dominant channelBlue
Hex per channelR 51 · G 5F · B FF

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Every value on this page was computed from “515fff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.