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Recognised as Colour

#3720D1

  • #3720D1
  • Blue
  • Dark
  • Nearest: Medium blue

#3720D1 is a blue with RGB values 55, 32, 209 and HSL 248°, 73%, 47%. It is a dark colour, so white text on it reaches 9.2:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#3720D1#3720D1
HEX#3720D1
RGBrgb(55, 32, 209)
RGB (0–1)0.2157, 0.1255, 0.8196
RGB percentages21.6%, 12.5%, 82%
HSLhsl(247.8, 73.4%, 47.3%)
HSV / HSBhsv(247.8, 84.7%, 82%)
CMYK73.7%, 84.7%, 0%, 18%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,612,881
CSS custom property--colour: #3720D1;

Brightness & contrast

Relative luminance0.06449WCAG 2.x, 0 is black and 1 is white
Perceived brightness80.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.17:1
Contrast with white9.17:1WCAG normal text: AAA
Contrast with black2.29:1WCAG normal text: Fail
Greyscale equivalent#323232
Inverted#C8DF2E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004FD6no red cones; affects about 1% of men; ΔE 29.8 from the original
Deuteranopia#0040CEno green cones; the most common form, about 1% of men; ΔE 21.9 from the original
Tritanopia#005B7Dno blue cones; rare, and affects men and women equally; ΔE 92.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.17:1WCAG large text: AAA
Contrast with black, large text2.29:1WCAG large text: Fail

Named colours

Medium blue · ΔE 10.8Blue violet · ΔE 17.6Dark violet · ΔE 22.7Dark blue · ΔE 24.7Dark orchid · ΔE 27.9Blue · ΔE 29.6
Nearest named CSS colourMedium blue (#0000CD)ΔE 10.83, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BAD120
Analogous#2062D1, #8F20D1
Triadic#D13720, #20D137
Split complementary#D19020, #61D120
Tetradic#D12062, #BAD120, #20D18F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CDC7F6
Lighter +30%#A59AF0
Lighter +20%#7E6EE9
Lighter +10%#5742E2
Darker −10%#2B19A5
Darker −20%#201279
Darker −30%#140C4C
Darker −40%#080520
More saturated +25%#2102EF
Less saturated −25%#4D3EB3

Channel breakdown

R55
G32
B209
Red55 (21.6%)
Green32 (12.5%)
Blue209 (82%)
Hue247.8°
Saturation (HSL)73.44%
Lightness47.25%
Dominant channelBlue
Hex per channelR 37 · G 20 · B D1

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Every value on this page was computed from “3720d1” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.