Colour

#173D5D

#173D5D
Blue
Dark
Nearest: Dark slate grey

#173D5D is a blue with RGB values 23, 61, 93 and HSL 207°, 60%, 23%. It is a dark colour, so white text on it reaches 11.3:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#173D5D#173D5D

HEX#173D5D

RGBrgb(23, 61, 93)

RGB (0–1)0.0902, 0.2392, 0.3647

RGB percentages9%, 23.9%, 36.5%

HSLhsl(207.4, 60.3%, 22.7%)

HSV / HSBhsv(207.4, 75.3%, 36.5%)

CMYK75.3%, 34.4%, 0%, 63.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,523,037

CSS custom property--colour: #173D5D;

Brightness & contrast

Relative luminance0.0431WCAG 2.x, 0 is black and 1 is white

Perceived brightness57.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 11.28:1

Contrast with white11.28:1WCAG normal text: AAA

Contrast with black1.86:1WCAG normal text: Fail

Greyscale equivalent#373737

Inverted#E8C2A2

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#2F3E5Eno red cones; affects about 1% of men; ΔE 5.9 from the original

Deuteranopia#25385Cno green cones; the most common form, about 1% of men; ΔE 6.1 from the original

Tritanopia#004548no blue cones; rare, and affects men and women equally; ΔE 22.6 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text11.28:1WCAG large text: AAA

Contrast with black, large text1.86:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 22.8 Steel blue · ΔE 29.4 Dim grey · ΔE 30.3 Slate grey · ΔE 30.8 Light slate grey · ΔE 33.4 Black · ΔE 33.7

Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 22.79, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#5D3717

Analogous#175D5A, #171A5D

Triadic#5D173D, #3D5D17

Split complementary#5D171A, #5D5A17

Tetradic#5A175D, #5D3717, #1A5D17

Tints, shades & saturation

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

Lighter +40%#67A5D9

Lighter +30%#3E8DCF

Lighter +20%#2B73AF

Lighter +10%#215886

Darker −10%#0D2234

Darker −20%#03070B

Darker −30%#000000

Darker −40%#000000

More saturated +25%#093E6B

Less saturated −25%#263C4F

Channel breakdown

R23

G61

B93

Red23 (9%)

Green61 (23.9%)

Blue93 (36.5%)

Hue207.43°

Saturation (HSL)60.34%

Lightness22.75%

Dominant channelBlue

Hex per channelR 17 · G 3D · B 5D

Keep nerding

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

#173D5D

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

Nerdulate something else