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Recognised as Colour

#3720FF

  • #3720FF
  • Blue
  • Dark
  • Nearest: Blue

#3720FF is a blue with RGB values 55, 32, 255 and HSL 246°, 100%, 56%. It is a dark colour, so white text on it reaches 7.5:1 contrast (AAA for normal text). The nearest named colour is Blue.

Colour values

#3720FF#3720FF
HEX#3720FF
RGBrgb(55, 32, 255)
RGB (0–1)0.2157, 0.1255, 1
RGB percentages21.6%, 12.5%, 100%
HSLhsl(246.2, 100%, 56.3%)
HSV / HSBhsv(246.2, 87.5%, 100%)
CMYK78.4%, 87.5%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,612,927
CSS custom property--colour: #3720FF;

Brightness & contrast

Relative luminance0.09065WCAG 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 7.47:1
Contrast with white7.47:1WCAG normal text: AAA
Contrast with black2.81:1WCAG normal text: Fail
Greyscale equivalent#353535
Inverted#C8DF00

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005FFFno red cones; affects about 1% of men; ΔE 39 from the original
Deuteranopia#004AFBno green cones; the most common form, about 1% of men; ΔE 25.2 from the original
Tritanopia#006F98no blue cones; rare, and affects men and women equally; ΔE 111.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.47:1WCAG large text: AAA
Contrast with black, large text2.81:1WCAG large text: Fail

Named colours

Blue · ΔE 9.4Medium blue · ΔE 16.2Blue violet · ΔE 27.6Dark violet · ΔE 31.4Dark orchid · ΔE 42.8Dark blue · ΔE 45.4
Nearest named CSS colourBlue (#0000FF)ΔE 9.39, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E8FF20
Analogous#2078FF, #A720FF
Triadic#FF3720, #20FF37
Split complementary#FFA620, #79FF20
Tetradic#FF2078, #E8FF20, #20FFA7

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EEECFF
Lighter +30%#C0B9FF
Lighter +20%#9286FF
Lighter +10%#6553FF
Darker −10%#1800EC
Darker −20%#1300B9
Darker −30%#0E0086
Darker −40%#090053
More saturated +25%#3720FF
Less saturated −25%#4D3CE3

Channel breakdown

R55
G32
B255
Red55 (21.6%)
Green32 (12.5%)
Blue255 (100%)
Hue246.19°
Saturation (HSL)100%
Lightness56.27%
Dominant channelBlue
Hex per channelR 37 · G 20 · B FF

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