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Recognised as Colour

#4B399D

  • #4B399D
  • Blue
  • Dark
  • Nearest: Rebecca purple

#4B399D is a blue with RGB values 75, 57, 157 and HSL 251°, 47%, 42%. It is a dark colour, so white text on it reaches 8.9:1 contrast (AAA for normal text). The nearest named colour is Rebecca purple.

Colour values

#4B399D#4B399D
HEX#4B399D
RGBrgb(75, 57, 157)
RGB (0–1)0.2941, 0.2235, 0.6157
RGB percentages29.4%, 22.4%, 61.6%
HSLhsl(250.8, 46.7%, 42%)
HSV / HSBhsv(250.8, 63.7%, 61.6%)
CMYK52.2%, 63.7%, 0%, 38.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,929,949
CSS custom property--colour: #4B399D;

Brightness & contrast

Relative luminance0.06856WCAG 2.x, 0 is black and 1 is white
Perceived brightness80 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.86:1
Contrast with white8.86:1WCAG normal text: AAA
Contrast with black2.37:1WCAG normal text: Fail
Greyscale equivalent#444444
Inverted#B4C662

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004DA0no red cones; affects about 1% of men; ΔE 21.2 from the original
Deuteranopia#00479Bno green cones; the most common form, about 1% of men; ΔE 19.1 from the original
Tritanopia#2C5165no blue cones; rare, and affects men and women equally; ΔE 55.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.86:1WCAG large text: AAA
Contrast with black, large text2.37:1WCAG large text: Fail

Named colours

Rebecca purple · ΔE 9.5Dark slateblue · ΔE 13.3Slate blue · ΔE 15Midnight blue · ΔE 16.1Indigo · ΔE 20.1Royal blue · ΔE 22.7
Nearest named CSS colourRebecca purple (#663399)ΔE 9.48, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8B9D39
Analogous#39599D, #7D399D
Triadic#9D4B39, #399D4B
Split complementary#9D7D39, #599D39
Tetradic#9D3959, #8B9D39, #399D7D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C3BCE6
Lighter +30%#A296D9
Lighter +20%#8171CB
Lighter +10%#604BBE
Darker −10%#392B78
Darker −20%#271E52
Darker −30%#15102D
Darker −40%#040307
More saturated +25%#3A1EB8
Less saturated −25%#5C5482

Channel breakdown

R75
G57
B157
Red75 (29.4%)
Green57 (22.4%)
Blue157 (61.6%)
Hue250.8°
Saturation (HSL)46.73%
Lightness41.96%
Dominant channelBlue
Hex per channelR 4B · G 39 · B 9D

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Every value on this page was computed from “4b399d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.