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Recognised as Colour

#4E37AB

  • #4E37AB
  • Blue
  • Dark
  • Nearest: Rebecca purple

#4E37AB is a blue with RGB values 78, 55, 171 and HSL 252°, 51%, 44%. It is a dark colour, so white text on it reaches 8.5:1 contrast (AAA for normal text). The nearest named colour is Rebecca purple.

Colour values

#4E37AB#4E37AB
HEX#4E37AB
RGBrgb(78, 55, 171)
RGB (0–1)0.3059, 0.2157, 0.6706
RGB percentages30.6%, 21.6%, 67.1%
HSLhsl(251.9, 51.3%, 44.3%)
HSV / HSBhsv(251.9, 67.8%, 67.1%)
CMYK54.4%, 67.8%, 0%, 32.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,126,059
CSS custom property--colour: #4E37AB;

Brightness & contrast

Relative luminance0.07292WCAG 2.x, 0 is black and 1 is white
Perceived brightness83.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.54:1
Contrast with white8.54:1WCAG normal text: AAA
Contrast with black2.46:1WCAG normal text: Fail
Greyscale equivalent#444444
Inverted#B1C854

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004FAFno red cones; affects about 1% of men; ΔE 22.5 from the original
Deuteranopia#0049A9no green cones; the most common form, about 1% of men; ΔE 20.8 from the original
Tritanopia#27546Cno blue cones; rare, and affects men and women equally; ΔE 63.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.54:1WCAG large text: AAA
Contrast with black, large text2.46:1WCAG large text: Fail

Named colours

Rebecca purple · ΔE 11.9Slate blue · ΔE 13.8Indigo · ΔE 17Medium slateblue · ΔE 20.8Midnight blue · ΔE 21.1Navy · ΔE 21.4
Nearest named CSS colourRebecca purple (#663399)ΔE 11.87, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#94AB37
Analogous#375AAB, #8837AB
Triadic#AB4E37, #37AB4E
Split complementary#AB8837, #5AAB37
Tetradic#AB375A, #94AB37, #37AB88

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CBC2EC
Lighter +30%#A99CDF
Lighter +20%#8875D3
Lighter +10%#664FC6
Darker −10%#3C2B84
Darker −20%#2B1E5E
Darker −30%#191237
Darker −40%#080511
More saturated +25%#3D1BC7
Less saturated −25%#5F538F

Channel breakdown

R78
G55
B171
Red78 (30.6%)
Green55 (21.6%)
Blue171 (67.1%)
Hue251.9°
Saturation (HSL)51.33%
Lightness44.31%
Dominant channelBlue
Hex per channelR 4E · G 37 · B AB

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Every value on this page was computed from “4e37ab” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.