Recognised as Colour

#366FD5

#366FD5
Blue
Dark
Nearest: Royal blue

#366FD5 is a blue with RGB values 54, 111, 213 and HSL 218°, 65%, 52%. 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

#366FD5#366FD5

HEX#366FD5

RGBrgb(54, 111, 213)

RGB (0–1)0.2118, 0.4353, 0.8353

RGB percentages21.2%, 43.5%, 83.5%

HSLhsl(218.5, 65.4%, 52.4%)

HSV / HSBhsv(218.5, 74.6%, 83.5%)

CMYK74.6%, 47.9%, 0%, 16.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer3,567,573

CSS custom property--colour: #366FD5;

Brightness & contrast

Relative luminance0.16957WCAG 2.x, 0 is black and 1 is white

Perceived brightness115.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.78:1

Contrast with white4.78:1WCAG normal text: AA

Contrast with black4.39:1WCAG normal text: Fail

Greyscale equivalent#6A6A6A

Inverted#C9902A

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#367AD9no red cones; affects about 1% of men; ΔE 7 from the original

Deuteranopia#006CD3no green cones; the most common form, about 1% of men; ΔE 3.8 from the original

Tritanopia#008798no blue cones; rare, and affects men and women equally; ΔE 57.4 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text4.78:1WCAG large text: AAA

Contrast with black, large text4.39:1WCAG large text: AA

Named colours

Royal blue · ΔE 12.1 Dodgerblue · ΔE 14.2 Cornflower blue · ΔE 17.8 Slate blue · ΔE 19.6 Medium purple · ΔE 22.6 Dark slateblue · ΔE 25.3

Nearest named CSS colourRoyal blue (#4169E1)ΔE 12.09, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#D59C36

Analogous#36BFD5, #4C36D5

Triadic#D5366F, #6FD536

Split complementary#D54D36, #BFD536

Tetradic#D536BF, #D59C36, #36D54C

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#DFE8F8

Lighter +30%#B5CAEF

Lighter +20%#8AABE7

Lighter +10%#608DDE

Darker −10%#2558B3

Darker −20%#1D4388

Darker −30%#142E5E

Darker −40%#0B1A34

More saturated +25%#1866F3

Less saturated −25%#5478B7

Channel breakdown

R54

G111

B213

Red54 (21.2%)

Green111 (43.5%)

Blue213 (83.5%)

Hue218.49°

Saturation (HSL)65.43%

Lightness52.35%

Dominant channelBlue

Hex per channelR 36 · G 6F · B D5

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#366FD5

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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