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Colour

#216DE4

  • #216DE4
  • Blue
  • Dark
  • Nearest: Royal blue

#216DE4 is a blue with RGB values 33, 109, 228 and HSL 217°, 78%, 51%. It is a dark colour, so white text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#216DE4#216DE4
HEX#216DE4
RGBrgb(33, 109, 228)
RGB (0–1)0.1294, 0.4275, 0.8941
RGB percentages12.9%, 42.7%, 89.4%
HSLhsl(216.6, 78.3%, 51.2%)
HSV / HSBhsv(216.6, 85.5%, 89.4%)
CMYK85.5%, 52.2%, 0%, 10.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,190,820
CSS custom property--colour: #216DE4;

Brightness & contrast

Relative luminance0.16862WCAG 2.x, 0 is black and 1 is white
Perceived brightness115 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.8:1
Contrast with white4.8:1WCAG normal text: AA
Contrast with black4.37:1WCAG normal text: Fail
Greyscale equivalent#656565
Inverted#DE921B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0E7BE8no red cones; affects about 1% of men; ΔE 9.9 from the original
Deuteranopia#006AE2no green cones; the most common form, about 1% of men; ΔE 1.8 from the original
Tritanopia#008A9Eno blue cones; rare, and affects men and women equally; ΔE 65.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.8:1WCAG large text: AAA
Contrast with black, large text4.37:1WCAG large text: AA

Named colours

Royal blue · ΔE 4.8Dodgerblue · ΔE 16.6Slate blue · ΔE 17.1Medium slateblue · ΔE 19.9Medium purple · ΔE 23.4Cornflower blue · ΔE 25.3
Nearest named CSS colourRoyal blue (#4169E1)ΔE 4.81, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E49821
Analogous#21CEE4, #3721E4
Triadic#E4216D, #6DE421
Split complementary#E43721, #CEE421
Tetradic#E421CE, #E49821, #21E437

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D7E5FA
Lighter +30%#A9C7F5
Lighter +20%#7CA9EF
Lighter +10%#4E8BEA
Darker −10%#1757BB
Darker −20%#11428E
Darker −30%#0C2D60
Darker −40%#061833
More saturated +25%#0667FF
Less saturated −25%#4074C5

Channel breakdown

R33
G109
B228
Red33 (12.9%)
Green109 (42.7%)
Blue228 (89.4%)
Hue216.62°
Saturation (HSL)78.31%
Lightness51.18%
Dominant channelBlue
Hex per channelR 21 · G 6D · B E4

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Every value on this page was computed from “216de4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.