Colour

#173B5C

#173B5C
Blue
Dark
Nearest: Dark slate grey

#173B5C is a blue with RGB values 23, 59, 92 and HSL 209°, 60%, 23%. It is a dark colour, so white text on it reaches 11.6:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#173B5C#173B5C

HEX#173B5C

RGBrgb(23, 59, 92)

RGB (0–1)0.0902, 0.2314, 0.3608

RGB percentages9%, 23.1%, 36.1%

HSLhsl(208.7, 60%, 22.5%)

HSV / HSBhsv(208.7, 75%, 36.1%)

CMYK75%, 35.9%, 0%, 63.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,522,524

CSS custom property--colour: #173B5C;

Brightness & contrast

Relative luminance0.04083WCAG 2.x, 0 is black and 1 is white

Perceived brightness56.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 11.56:1

Contrast with white11.56:1WCAG normal text: AAA

Contrast with black1.82:1WCAG normal text: Fail

Greyscale equivalent#363636

Inverted#E8C4A3

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#2C3D5Dno red cones; affects about 1% of men; ΔE 4.8 from the original

Deuteranopia#22365Bno green cones; the most common form, about 1% of men; ΔE 5.6 from the original

Tritanopia#004347no blue cones; rare, and affects men and women equally; ΔE 22.7 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text11.56:1WCAG large text: AAA

Contrast with black, large text1.82:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 23.9 Steel blue · ΔE 30 Dim grey · ΔE 31.1 Slate grey · ΔE 31.7 Dark slateblue · ΔE 33.1 Black · ΔE 33.5

Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 23.86, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#5C3817

Analogous#175C5A, #17195C

Triadic#5C173B, #3B5C17

Split complementary#5C1719, #5C5A17

Tetradic#5A175C, #5C3817, #195C17

Tints, shades & saturation

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

Lighter +40%#66A2D9

Lighter +30%#3D89CF

Lighter +20%#2B6FAE

Lighter +10%#215585

Darker −10%#0D2133

Darker −20%#03070A

Darker −30%#000000

Darker −40%#000000

More saturated +25%#093C6A

Less saturated −25%#253A4E

Channel breakdown

R23

G59

B92

Red23 (9%)

Green59 (23.1%)

Blue92 (36.1%)

Hue208.7°

Saturation (HSL)60%

Lightness22.55%

Dominant channelBlue

Hex per channelR 17 · G 3B · B 5C

Keep nerding

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

#173B5C

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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