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Recognised as Colour

#366EE5

  • #366EE5
  • Blue
  • Dark
  • Nearest: Royal blue

#366EE5 is a blue with RGB values 54, 110, 229 and HSL 221°, 77%, 55%. It is a dark colour, so white text on it reaches 4.6:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#366EE5#366EE5
HEX#366EE5
RGBrgb(54, 110, 229)
RGB (0–1)0.2118, 0.4314, 0.898
RGB percentages21.2%, 43.1%, 89.8%
HSLhsl(220.8, 77.1%, 55.5%)
HSV / HSBhsv(220.8, 76.4%, 89.8%)
CMYK76.4%, 52%, 0%, 10.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,567,333
CSS custom property--colour: #366EE5;

Brightness & contrast

Relative luminance0.17593WCAG 2.x, 0 is black and 1 is white
Perceived brightness118.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.65:1
Contrast with white4.65:1WCAG normal text: AA
Contrast with black4.52:1WCAG normal text: AA
Greyscale equivalent#6B6B6B
Inverted#C9911A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#187DE9no red cones; affects about 1% of men; ΔE 11.5 from the original
Deuteranopia#006DE3no green cones; the most common form, about 1% of men; ΔE 3.8 from the original
Tritanopia#008B9Fno blue cones; rare, and affects men and women equally; ΔE 66.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.65:1WCAG large text: AAA
Contrast with black, large text4.52:1WCAG large text: AAA

Named colours

Royal blue · ΔE 3.3Slate blue · ΔE 15.5Dodgerblue · ΔE 17Medium slateblue · ΔE 18.1Medium purple · ΔE 21.5Cornflower blue · ΔE 25.1
Nearest named CSS colourRoyal blue (#4169E1)ΔE 3.26, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E5AD36
Analogous#36C6E5, #5536E5
Triadic#E5366E, #6EE536
Split complementary#E55636, #C5E536
Tetradic#E536C6, #E5AD36, #36E556

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EBF0FC
Lighter +30%#BDD0F7
Lighter +20%#90AFF1
Lighter +10%#638FEB
Darker −10%#1B54CD
Darker −20%#1541A0
Darker −30%#0F2F73
Darker −40%#091D46
More saturated +25%#1C65FF
Less saturated −25%#5278C9

Channel breakdown

R54
G110
B229
Red54 (21.2%)
Green110 (43.1%)
Blue229 (89.8%)
Hue220.8°
Saturation (HSL)77.09%
Lightness55.49%
Dominant channelBlue
Hex per channelR 36 · G 6E · B E5

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Every value on this page was computed from “366ee5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.