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Colour

#3F57FE

  • #3F57FE
  • Blue
  • Dark
  • Nearest: Medium slateblue

#3F57FE is a blue with RGB values 63, 87, 254 and HSL 232°, 99%, 62%. It is a dark colour, so white text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Medium slateblue.

Colour values

#3F57FE#3F57FE
HEX#3F57FE
RGBrgb(63, 87, 254)
RGB (0–1)0.2471, 0.3412, 0.9961
RGB percentages24.7%, 34.1%, 99.6%
HSLhsl(232.5, 99%, 62.2%)
HSV / HSBhsv(232.5, 75.2%, 99.6%)
CMYK75.2%, 65.7%, 0%, 0.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,151,294
CSS custom property--colour: #3F57FE;

Brightness & contrast

Relative luminance0.15029WCAG 2.x, 0 is black and 1 is white
Perceived brightness113.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.24:1
Contrast with white5.24:1WCAG normal text: AA
Contrast with black4.01:1WCAG normal text: Fail
Greyscale equivalent#5E5E5E
Inverted#C0A801

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0075FFno red cones; affects about 1% of men; ΔE 24.3 from the original
Deuteranopia#0063FBno green cones; the most common form, about 1% of men; ΔE 12.3 from the original
Tritanopia#0084A3no blue cones; rare, and affects men and women equally; ΔE 89.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.24:1WCAG large text: AAA
Contrast with black, large text4.01:1WCAG large text: AA

Named colours

Medium slateblue · ΔE 21.6Blue violet · ΔE 25Royal blue · ΔE 29Medium blue · ΔE 29.4Slate blue · ΔE 29.5Dark orchid · ΔE 30.8
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 21.62, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FEE63F
Analogous#3FB7FE, #863FFE
Triadic#FE3F57, #57FE3F
Split complementary#FE863F, #B7FE3F
Tetradic#FE3FB7, #FEE63F, #3FFE86

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D7DCFF
Lighter +20%#A4B0FF
Lighter +10%#7283FE
Darker −10%#0C2BFE
Darker −20%#011CD6
Darker −30%#0115A3
Darker −40%#010F70
More saturated +25%#3E56FF
Less saturated −25%#5769E6

Channel breakdown

R63
G87
B254
Red63 (24.7%)
Green87 (34.1%)
Blue254 (99.6%)
Hue232.46°
Saturation (HSL)98.96%
Lightness62.16%
Dominant channelBlue
Hex per channelR 3F · G 57 · B FE

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Every value on this page was computed from “3f57fe” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.