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Colour

#4057FF

  • #4057FF
  • Blue
  • Dark
  • Nearest: Medium slateblue

#4057FF is a blue with RGB values 64, 87, 255 and HSL 233°, 100%, 63%. 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

#4057FF#4057FF
HEX#4057FF
RGBrgb(64, 87, 255)
RGB (0–1)0.251, 0.3412, 1
RGB percentages25.1%, 34.1%, 100%
HSLhsl(232.8, 100%, 62.5%)
HSV / HSBhsv(232.8, 74.9%, 100%)
CMYK74.9%, 65.9%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,216,831
CSS custom property--colour: #4057FF;

Brightness & contrast

Relative luminance0.15126WCAG 2.x, 0 is black and 1 is white
Perceived brightness114.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.22:1
Contrast with white5.22:1WCAG normal text: AA
Contrast with black4.03:1WCAG normal text: Fail
Greyscale equivalent#5E5E5E
Inverted#BFA800

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0076FFno red cones; affects about 1% of men; ΔE 25.6 from the original
Deuteranopia#0063FCno green cones; the most common form, about 1% of men; ΔE 12.3 from the original
Tritanopia#0084A4no blue cones; rare, and affects men and women equally; ΔE 89.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.22:1WCAG large text: AAA
Contrast with black, large text4.03:1WCAG large text: AA

Named colours

Medium slateblue · ΔE 22Blue violet · ΔE 24.8Medium blue · ΔE 29.1Royal blue · ΔE 29.5Slate blue · ΔE 30Dark orchid · ΔE 30.8
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 22.02, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFE840
Analogous#40B6FF, #8840FF
Triadic#FF4057, #57FF40
Split complementary#FF8940, #B6FF40
Tetradic#FF40B7, #FFE840, #40FF89

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D9DEFF
Lighter +20%#A6B1FF
Lighter +10%#7384FF
Darker −10%#0D2AFF
Darker −20%#001AD9
Darker −30%#0014A6
Darker −40%#000E73
More saturated +25%#4057FF
Less saturated −25%#5869E7

Channel breakdown

R64
G87
B255
Red64 (25.1%)
Green87 (34.1%)
Blue255 (100%)
Hue232.77°
Saturation (HSL)100%
Lightness62.55%
Dominant channelBlue
Hex per channelR 40 · G 57 · B FF

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Every value on this page was computed from “4057ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.