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Recognised as Colour

#3955B4

  • #3955B4
  • Blue
  • Dark
  • Nearest: Dark slateblue

#3955B4 is a blue with RGB values 57, 85, 180 and HSL 226°, 52%, 46%. It is a dark colour, so white text on it reaches 6.7:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#3955B4#3955B4
HEX#3955B4
RGBrgb(57, 85, 180)
RGB (0–1)0.2235, 0.3333, 0.7059
RGB percentages22.4%, 33.3%, 70.6%
HSLhsl(226.3, 51.9%, 46.5%)
HSV / HSBhsv(226.3, 68.3%, 70.6%)
CMYK68.3%, 52.8%, 0%, 29.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,757,492
CSS custom property--colour: #3955B4;

Brightness & contrast

Relative luminance0.10662WCAG 2.x, 0 is black and 1 is white
Perceived brightness94.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.7:1
Contrast with white6.7:1WCAG normal text: AA
Contrast with black3.13:1WCAG normal text: Fail
Greyscale equivalent#565656
Inverted#C6AA4B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1762B7no red cones; affects about 1% of men; ΔE 11.8 from the original
Deuteranopia#0057B2no green cones; the most common form, about 1% of men; ΔE 7.2 from the original
Tritanopia#006C7Cno blue cones; rare, and affects men and women equally; ΔE 56 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.7:1WCAG large text: AAA
Contrast with black, large text3.13:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 14.8Royal blue · ΔE 15.3Slate blue · ΔE 16.3Medium purple · ΔE 22.3Rebecca purple · ΔE 23Dodgerblue · ΔE 25.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 14.81, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B49839
Analogous#3992B4, #5A39B4
Triadic#B43955, #55B439
Split complementary#B45B39, #92B439
Tetradic#B43993, #B49839, #39B45B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CBD3EE
Lighter +30%#A4B2E2
Lighter +20%#7D91D6
Lighter +10%#5671CA
Darker −10%#2D438D
Darker −20%#203067
Darker −30%#141E40
Darker −40%#080C19
More saturated +25%#1B45D2
Less saturated −25%#576596

Channel breakdown

R57
G85
B180
Red57 (22.4%)
Green85 (33.3%)
Blue180 (70.6%)
Hue226.34°
Saturation (HSL)51.9%
Lightness46.47%
Dominant channelBlue
Hex per channelR 39 · G 55 · B B4

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Every value on this page was computed from “3955b4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.