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Recognised as Colour

#406CD1

  • #406CD1
  • Blue
  • Dark
  • Nearest: Royal blue

#406CD1 is a blue with RGB values 64, 108, 209 and HSL 222°, 61%, 54%. It is a dark colour, so white text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#406CD1#406CD1
HEX#406CD1
RGBrgb(64, 108, 209)
RGB (0–1)0.251, 0.4235, 0.8196
RGB percentages25.1%, 42.4%, 82%
HSLhsl(221.8, 61.2%, 53.5%)
HSV / HSBhsv(221.8, 69.4%, 82%)
CMYK69.4%, 48.3%, 0%, 18%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,222,161
CSS custom property--colour: #406CD1;

Brightness & contrast

Relative luminance0.16419WCAG 2.x, 0 is black and 1 is white
Perceived brightness114.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.9:1
Contrast with white4.9:1WCAG normal text: AA
Contrast with black4.28:1WCAG normal text: Fail
Greyscale equivalent#6A6A6A
Inverted#BF932E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3578D5no red cones; affects about 1% of men; ΔE 8.6 from the original
Deuteranopia#086ACFno green cones; the most common form, about 1% of men; ΔE 5.3 from the original
Tritanopia#008494no blue cones; rare, and affects men and women equally; ΔE 58.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.9:1WCAG large text: AAA
Contrast with black, large text4.28:1WCAG large text: AA

Named colours

Royal blue · ΔE 11.6Dodgerblue · ΔE 16.1Slate blue · ΔE 17.7Cornflower blue · ΔE 18.6Medium purple · ΔE 20.8Dark slateblue · ΔE 23.4
Nearest named CSS colourRoyal blue (#4169E1)ΔE 11.59, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D1A540
Analogous#40B5D1, #5C40D1
Triadic#D1406C, #6CD140
Split complementary#D15C40, #B5D140
Tetradic#D140B5, #D1A540, #40D15C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E4EBF9
Lighter +30%#BBCBEF
Lighter +20%#92ABE5
Lighter +10%#698CDB
Darker −10%#2B54B3
Darker −20%#21418A
Darker −30%#172E61
Darker −40%#0D1A38
More saturated +25%#2260EF
Less saturated −25%#5E78B3

Channel breakdown

R64
G108
B209
Red64 (25.1%)
Green108 (42.4%)
Blue209 (82%)
Hue221.79°
Saturation (HSL)61.18%
Lightness53.53%
Dominant channelBlue
Hex per channelR 40 · G 6C · B D1

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Every value on this page was computed from “406cd1” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.