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Recognised as Colour

#3744A4

  • #3744A4
  • Blue
  • Dark
  • Nearest: Dark slateblue

#3744A4 is a blue with RGB values 55, 68, 164 and HSL 233°, 50%, 43%. It is a dark colour, so white text on it reaches 8.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#3744A4#3744A4
HEX#3744A4
RGBrgb(55, 68, 164)
RGB (0–1)0.2157, 0.2667, 0.6431
RGB percentages21.6%, 26.7%, 64.3%
HSLhsl(232.8, 49.8%, 42.9%)
HSV / HSBhsv(232.8, 66.5%, 64.3%)
CMYK66.5%, 58.5%, 0%, 35.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,622,052
CSS custom property--colour: #3744A4;

Brightness & contrast

Relative luminance0.07627WCAG 2.x, 0 is black and 1 is white
Perceived brightness81.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.32:1
Contrast with white8.32:1WCAG normal text: AAA
Contrast with black2.53:1WCAG normal text: Fail
Greyscale equivalent#484848
Inverted#C8BB5B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0053A7no red cones; affects about 1% of men; ΔE 14.5 from the original
Deuteranopia#0049A2no green cones; the most common form, about 1% of men; ΔE 9.3 from the original
Tritanopia#005B6Dno blue cones; rare, and affects men and women equally; ΔE 56.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.32:1WCAG large text: AAA
Contrast with black, large text2.53:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 11.7Slate blue · ΔE 15.9Rebecca purple · ΔE 17.4Midnight blue · ΔE 18.5Royal blue · ΔE 18.8Medium purple · ΔE 24.3
Nearest named CSS colourDark slateblue (#483D8B)ΔE 11.71, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A49737
Analogous#377BA4, #6137A4
Triadic#A43744, #44A437
Split complementary#A46137, #7BA437
Tetradic#A4377B, #A49737, #37A461

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BEC3E9
Lighter +30%#98A0DC
Lighter +20%#717DD0
Lighter +10%#4B5AC3
Darker −10%#2A347E
Darker −20%#1D2458
Darker −30%#111431
Darker −40%#04050B
More saturated +25%#1C2FBF
Less saturated −25%#525989

Channel breakdown

R55
G68
B164
Red55 (21.6%)
Green68 (26.7%)
Blue164 (64.3%)
Hue232.84°
Saturation (HSL)49.77%
Lightness42.94%
Dominant channelBlue
Hex per channelR 37 · G 44 · B A4

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Every value on this page was computed from “3744a4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.