Colour

#313C79

#313C79
Blue
Dark
Nearest: Dark slateblue

#313C79 is a blue with RGB values 49, 60, 121 and HSL 231°, 42%, 33%. It is a dark colour, so white text on it reaches 10.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#313C79#313C79

HEX#313C79

RGBrgb(49, 60, 121)

RGB (0–1)0.1922, 0.2353, 0.4745

RGB percentages19.2%, 23.5%, 47.5%

HSLhsl(230.8, 42.4%, 33.3%)

HSV / HSBhsv(230.8, 59.5%, 47.5%)

CMYK59.5%, 50.4%, 0%, 52.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer3,226,745

CSS custom property--colour: #313C79;

Brightness & contrast

Relative luminance0.05265WCAG 2.x, 0 is black and 1 is white

Perceived brightness67.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 10.23:1

Contrast with white10.23:1WCAG normal text: AAA

Contrast with black2.05:1WCAG normal text: Fail

Greyscale equivalent#3E3E3E

Inverted#CEC386

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#1E447Bno red cones; affects about 1% of men; ΔE 8.5 from the original

Deuteranopia#133E78no green cones; the most common form, about 1% of men; ΔE 6.9 from the original

Tritanopia#034A54no blue cones; rare, and affects men and women equally; ΔE 39.6 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text10.23:1WCAG large text: AAA

Contrast with black, large text2.05:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 12.6 Midnight blue · ΔE 24.1 Rebecca purple · ΔE 30.1 Steel blue · ΔE 31.9 Slate blue · ΔE 34.8 Royal blue · ΔE 37

Nearest named CSS colourDark slateblue (#483D8B)ΔE 12.64, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#796E31

Analogous#316079, #4A3179

Triadic#79313C, #3C7931

Split complementary#794A31, #607931

Tetradic#793160, #796E31, #31794A

Tints, shades & saturation

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

Lighter +40%#9EA7D8

Lighter +30%#7A86C9

Lighter +20%#5665BA

Lighter +10%#404E9D

Darker −10%#222A55

Darker −20%#141830

Darker −30%#05060C

Darker −40%#000000

More saturated +25%#1C2D8E

Less saturated −25%#464B64

Channel breakdown

R49

G60

B121

Red49 (19.2%)

Green60 (23.5%)

Blue121 (47.5%)

Hue230.83°

Saturation (HSL)42.35%

Lightness33.33%

Dominant channelBlue

Hex per channelR 31 · G 3C · B 79

Keep nerding

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

#313C79

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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