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Recognised as Colour

#3B3481

  • #3B3481
  • Blue
  • Dark
  • Nearest: Dark slateblue

#3B3481 is a blue with RGB values 59, 52, 129 and HSL 245°, 43%, 35%. It is a dark colour, so white text on it reaches 10.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#3B3481#3B3481
HEX#3B3481
RGBrgb(59, 52, 129)
RGB (0–1)0.2314, 0.2039, 0.5059
RGB percentages23.1%, 20.4%, 50.6%
HSLhsl(245.5, 42.5%, 35.5%)
HSV / HSBhsv(245.5, 59.7%, 50.6%)
CMYK54.3%, 59.7%, 0%, 49.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,880,065
CSS custom property--colour: #3B3481;

Brightness & contrast

Relative luminance0.04971WCAG 2.x, 0 is black and 1 is white
Perceived brightness67.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.53:1
Contrast with white10.53:1WCAG normal text: AAA
Contrast with black1.99:1WCAG normal text: Fail
Greyscale equivalent#3B3B3B
Inverted#C4CB7E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004284no red cones; affects about 1% of men; ΔE 16.3 from the original
Deuteranopia#003C7Fno green cones; the most common form, about 1% of men; ΔE 14.2 from the original
Tritanopia#1E4655no blue cones; rare, and affects men and women equally; ΔE 45.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.53:1WCAG large text: AAA
Contrast with black, large text1.99:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 4.2Midnight blue · ΔE 14.2Rebecca purple · ΔE 18.8Slate blue · ΔE 26.2Indigo · ΔE 28.8Royal blue · ΔE 31
Nearest named CSS colourDark slateblue (#483D8B)ΔE 4.24, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7A8134
Analogous#345381, #623481
Triadic#813B34, #34813B
Split complementary#816134, #548134
Tetradic#813453, #7A8134, #348162

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#ABA6DB
Lighter +30%#8882CC
Lighter +20%#665DBE
Lighter +10%#4C43A5
Darker −10%#2A255D
Darker −20%#1A1738
Darker −30%#090814
Darker −40%#000000
More saturated +25%#281D98
Less saturated −25%#4E4B6A

Channel breakdown

R59
G52
B129
Red59 (23.1%)
Green52 (20.4%)
Blue129 (50.6%)
Hue245.45°
Saturation (HSL)42.54%
Lightness35.49%
Dominant channelBlue
Hex per channelR 3B · G 34 · B 81

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Every value on this page was computed from “3b3481” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.