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Recognised as Colour

#515BFD

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

#515BFD is a blue with RGB values 81, 91, 253 and HSL 237°, 98%, 65%. It is a dark colour, so white text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Medium slateblue.

Colour values

#515BFD#515BFD
HEX#515BFD
RGBrgb(81, 91, 253)
RGB (0–1)0.3176, 0.3569, 0.9922
RGB percentages31.8%, 35.7%, 99.2%
HSLhsl(236.5, 97.7%, 65.5%)
HSV / HSBhsv(236.5, 68%, 99.2%)
CMYK68%, 64%, 0%, 0.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,331,965
CSS custom property--colour: #515BFD;

Brightness & contrast

Relative luminance0.16323WCAG 2.x, 0 is black and 1 is white
Perceived brightness118.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.92:1
Contrast with white4.92:1WCAG normal text: AA
Contrast with black4.26:1WCAG normal text: Fail
Greyscale equivalent#656565
Inverted#AEA402

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0078FFno red cones; affects about 1% of men; ΔE 24.4 from the original
Deuteranopia#0069FAno green cones; the most common form, about 1% of men; ΔE 15.4 from the original
Tritanopia#0085A4no blue cones; rare, and affects men and women equally; ΔE 86.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.92:1WCAG large text: AAA
Contrast with black, large text4.26:1WCAG large text: AA

Named colours

Medium slateblue · ΔE 17.8Blue violet · ΔE 24.9Royal blue · ΔE 26Slate blue · ΔE 26.1Dark orchid · ΔE 28.8Medium blue · ΔE 32
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 17.78, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FDF351
Analogous#51B1FD, #9D51FD
Triadic#FD515B, #5BFD51
Split complementary#FD9D51, #B1FD51
Tetradic#FD51B1, #FDF351, #51FD9D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#E8EAFF
Lighter +20%#B6BAFE
Lighter +10%#838BFE
Darker −10%#1F2BFC
Darker −20%#0310E5
Darker −30%#020CB3
Darker −40%#010981
More saturated +25%#4F59FF
Less saturated −25%#676EE7

Channel breakdown

R81
G91
B253
Red81 (31.8%)
Green91 (35.7%)
Blue253 (99.2%)
Hue236.51°
Saturation (HSL)97.73%
Lightness65.49%
Dominant channelBlue
Hex per channelR 51 · G 5B · B FD

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