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Recognised as Colour

#4E51E5

  • #4E51E5
  • Blue
  • Dark
  • Nearest: Medium slateblue

#4E51E5 is a blue with RGB values 78, 81, 229 and HSL 239°, 74%, 60%. It is a dark colour, so white text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Medium slateblue.

Colour values

#4E51E5#4E51E5
HEX#4E51E5
RGBrgb(78, 81, 229)
RGB (0–1)0.3059, 0.3176, 0.898
RGB percentages30.6%, 31.8%, 89.8%
HSLhsl(238.8, 74.4%, 60.2%)
HSV / HSBhsv(238.8, 65.9%, 89.8%)
CMYK65.9%, 64.6%, 0%, 10.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,132,773
CSS custom property--colour: #4E51E5;

Brightness & contrast

Relative luminance0.13162WCAG 2.x, 0 is black and 1 is white
Perceived brightness107.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.78:1
Contrast with white5.78:1WCAG normal text: AA
Contrast with black3.63:1WCAG normal text: Fail
Greyscale equivalent#5B5B5B
Inverted#B1AE1A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#006CEAno red cones; affects about 1% of men; ΔE 22 from the original
Deuteranopia#005FE2no green cones; the most common form, about 1% of men; ΔE 15.9 from the original
Tritanopia#007894no blue cones; rare, and affects men and women equally; ΔE 81.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.78:1WCAG large text: AAA
Contrast with black, large text3.63:1WCAG large text: AA

Named colours

Medium slateblue · ΔE 13.9Slate blue · ΔE 19.5Royal blue · ΔE 21.1Blue violet · ΔE 25.7Dark orchid · ΔE 26Medium purple · ΔE 28.9
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 13.88, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E5E24E
Analogous#4E9CE5, #974EE5
Triadic#E54E51, #51E54E
Split complementary#E5974E, #9CE54E
Tetradic#E54E9C, #E5E24E, #4EE597

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D3D4F9
Lighter +20%#A7A8F2
Lighter +10%#7A7DEC
Darker −10%#2225DE
Darker −20%#1A1DB3
Darker −30%#141686
Darker −40%#0D0F5A
More saturated +25%#3539FE
Less saturated −25%#6769CC

Channel breakdown

R78
G81
B229
Red78 (30.6%)
Green81 (31.8%)
Blue229 (89.8%)
Hue238.81°
Saturation (HSL)74.38%
Lightness60.2%
Dominant channelBlue
Hex per channelR 4E · G 51 · B E5

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Every value on this page was computed from “4e51e5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.