Colour

#17334E

#17334E
Blue
Dark
Nearest: Dark slate grey

#17334E is a blue with RGB values 23, 51, 78 and HSL 209°, 54%, 20%. It is a dark colour, so white text on it reaches 13:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#17334E#17334E

HEX#17334E

RGBrgb(23, 51, 78)

RGB (0–1)0.0902, 0.2, 0.3059

RGB percentages9%, 20%, 30.6%

HSLhsl(209.5, 54.5%, 19.8%)

HSV / HSBhsv(209.5, 70.5%, 30.6%)

CMYK70.5%, 34.6%, 0%, 69.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,520,462

CSS custom property--colour: #17334E;

Brightness & contrast

Relative luminance0.031WCAG 2.x, 0 is black and 1 is white

Perceived brightness48.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 12.96:1

Contrast with white12.96:1WCAG normal text: AAA

Contrast with black1.62:1WCAG normal text: Fail

Greyscale equivalent#2F2F2F

Inverted#E8CCB1

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#27344Fno red cones; affects about 1% of men; ΔE 4.3 from the original

Deuteranopia#202F4Dno green cones; the most common form, about 1% of men; ΔE 4.7 from the original

Tritanopia#00393Dno blue cones; rare, and affects men and women equally; ΔE 19 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text12.96:1WCAG large text: AAA

Contrast with black, large text1.62:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 22.3 Black · ΔE 28.4 Dim grey · ΔE 31 Slate grey · ΔE 33.7 Steel blue · ΔE 34.5 Dark slateblue · ΔE 36.3

Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 22.27, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#4E3217

Analogous#174E4E, #17174E

Triadic#4E1733, #334E17

Split complementary#4E1717, #4E4E17

Tetradic#4E174E, #4E3217, #184E17

Tints, shades & saturation

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

Lighter +40%#619AD0

Lighter +30%#3A80C4

Lighter +20%#2E679D

Lighter +10%#234D75

Darker −10%#0B1927

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#0A335B

Less saturated −25%#243341

Channel breakdown

R23

G51

B78

Red23 (9%)

Green51 (20%)

Blue78 (30.6%)

Hue209.45°

Saturation (HSL)54.46%

Lightness19.8%

Dominant channelBlue

Hex per channelR 17 · G 33 · B 4E

Keep nerding

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#17334E

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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