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Recognised as Colour

#3970FF

  • #3970FF
  • Blue
  • Dark
  • Nearest: Royal blue

#3970FF is a blue with RGB values 57, 112, 255 and HSL 223°, 100%, 61%. It is a dark colour, so black text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#3970FF#3970FF
HEX#3970FF
RGBrgb(57, 112, 255)
RGB (0–1)0.2235, 0.4392, 1
RGB percentages22.4%, 43.9%, 100%
HSLhsl(223.3, 100%, 61.2%)
HSV / HSBhsv(223.3, 77.6%, 100%)
CMYK77.6%, 56.1%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,764,479
CSS custom property--colour: #3970FF;

Brightness & contrast

Relative luminance0.19678WCAG 2.x, 0 is black and 1 is white
Perceived brightness125.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.94:1
Contrast with white4.25:1WCAG normal text: Fail
Contrast with black4.94:1WCAG normal text: AA
Greyscale equivalent#6F6F6F
Inverted#C68F00

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0084FFno red cones; affects about 1% of men; ΔE 17.5 from the original
Deuteranopia#0072FCno green cones; the most common form, about 1% of men; ΔE 5.4 from the original
Tritanopia#0094ADno blue cones; rare, and affects men and women equally; ΔE 77.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.25:1WCAG large text: AA
Contrast with black, large text4.94:1WCAG large text: AAA

Named colours

Royal blue · ΔE 12.7Medium slateblue · ΔE 14.2Slate blue · ΔE 19.8Dodgerblue · ΔE 26.5Medium purple · ΔE 26.8Rebecca purple · ΔE 36.2
Nearest named CSS colourRoyal blue (#4169E1)ΔE 12.73, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFC839
Analogous#39D3FF, #6539FF
Triadic#FF3970, #70FF39
Split complementary#FF6539, #D3FF39
Tetradic#FF39D3, #FFC839, #39FF65

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D2DFFF
Lighter +20%#9FBAFF
Lighter +10%#6C95FF
Darker −10%#064BFF
Darker −20%#003AD2
Darker −30%#002C9F
Darker −40%#001E6C
More saturated +25%#3970FF
Less saturated −25%#527BE6

Channel breakdown

R57
G112
B255
Red57 (22.4%)
Green112 (43.9%)
Blue255 (100%)
Hue223.33°
Saturation (HSL)100%
Lightness61.18%
Dominant channelBlue
Hex per channelR 39 · G 70 · B FF

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Every value on this page was computed from “3970ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.