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Recognised as Colour

#3742FF

  • #3742FF
  • Blue
  • Dark
  • Nearest: Medium blue

#3742FF is a blue with RGB values 55, 66, 255 and HSL 237°, 100%, 61%. It is a dark colour, so white text on it reaches 6.2:1 contrast (AA for normal text). The nearest named colour is Medium blue.

Colour values

#3742FF#3742FF
HEX#3742FF
RGBrgb(55, 66, 255)
RGB (0–1)0.2157, 0.2588, 1
RGB percentages21.6%, 25.9%, 100%
HSLhsl(236.7, 100%, 60.8%)
HSV / HSBhsv(236.7, 78.4%, 100%)
CMYK78.4%, 74.1%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,621,631
CSS custom property--colour: #3742FF;

Brightness & contrast

Relative luminance0.11929WCAG 2.x, 0 is black and 1 is white
Perceived brightness104.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.2:1
Contrast with white6.2:1WCAG normal text: AA
Contrast with black3.39:1WCAG normal text: Fail
Greyscale equivalent#4D4D4D
Inverted#C8BD00

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#006BFFno red cones; affects about 1% of men; ΔE 31 from the original
Deuteranopia#0057FCno green cones; the most common form, about 1% of men; ΔE 16.9 from the original
Tritanopia#007A9Eno blue cones; rare, and affects men and women equally; ΔE 99.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.2:1WCAG large text: AAA
Contrast with black, large text3.39:1WCAG large text: AA

Named colours

Medium blue · ΔE 18.2Blue violet · ΔE 21.5Blue · ΔE 26.6Dark violet · ΔE 28.8Dark orchid · ΔE 33.7Medium slateblue · ΔE 34.8
Nearest named CSS colourMedium blue (#0000CD)ΔE 18.22, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFF437
Analogous#37A6FF, #9037FF
Triadic#FF3742, #42FF37
Split complementary#FF9037, #A6FF37
Tetradic#FF37A6, #FFF437, #37FF90

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D0D3FF
Lighter +20%#9DA2FF
Lighter +10%#6A72FF
Darker −10%#0412FF
Darker −20%#000BD0
Darker −30%#00099D
Darker −40%#00066A
More saturated +25%#3742FF
Less saturated −25%#5058E6

Channel breakdown

R55
G66
B255
Red55 (21.6%)
Green66 (25.9%)
Blue255 (100%)
Hue236.7°
Saturation (HSL)100%
Lightness60.78%
Dominant channelBlue
Hex per channelR 37 · G 42 · B FF

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Every value on this page was computed from “3742ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.