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Colour

#3990FF

  • #3990FF
  • Blue
  • Dark
  • Nearest: Dodgerblue

#3990FF is a blue with RGB values 57, 144, 255 and HSL 214°, 100%, 61%. It is a dark colour, so black text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Dodgerblue.

Colour values

#3990FF#3990FF
HEX#3990FF
RGBrgb(57, 144, 255)
RGB (0–1)0.2235, 0.5647, 1
RGB percentages22.4%, 56.5%, 100%
HSLhsl(213.6, 100%, 61.2%)
HSV / HSBhsv(213.6, 77.6%, 100%)
CMYK77.6%, 43.5%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,772,671
CSS custom property--colour: #3990FF;

Brightness & contrast

Relative luminance0.28036WCAG 2.x, 0 is black and 1 is white
Perceived brightness143.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.61:1
Contrast with white3.18:1WCAG normal text: Fail
Contrast with black6.61:1WCAG normal text: AA
Greyscale equivalent#868686
Inverted#C66F00

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#579AFFno red cones; affects about 1% of men; ΔE 7.3 from the original
Deuteranopia#2E88FDno green cones; the most common form, about 1% of men; ΔE 5.1 from the original
Tritanopia#00AABBno blue cones; rare, and affects men and women equally; ΔE 60.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.18:1WCAG large text: AA
Contrast with black, large text6.61:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 2.4Cornflower blue · ΔE 13.6Royal blue · ΔE 18.8Medium purple · ΔE 28.1Slate blue · ΔE 28.4Medium slateblue · ΔE 30.2
Nearest named CSS colourDodgerblue (#1E90FF)ΔE 2.36, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFA839
Analogous#39F3FF, #4539FF
Triadic#FF3990, #90FF39
Split complementary#FF4539, #F3FF39
Tetradic#FF39F3, #FFA839, #39FF45

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D2E6FF
Lighter +20%#9FC9FF
Lighter +10%#6CADFF
Darker −10%#0673FF
Darker −20%#005CD2
Darker −30%#00469F
Darker −40%#002F6C
More saturated +25%#3990FF
Less saturated −25%#5293E6

Channel breakdown

R57
G144
B255
Red57 (22.4%)
Green144 (56.5%)
Blue255 (100%)
Hue213.64°
Saturation (HSL)100%
Lightness61.18%
Dominant channelBlue
Hex per channelR 39 · G 90 · B FF

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Every value on this page was computed from “3990ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.