#173d7d

Color #173d7d

A moderately saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 14.98 Nearest Tailwind class blue-900 #1c398e · ΔE 3.8

Open in Palette generator Color wheel Color mixer Contrast checker Blindness simulator Gradient

Conversions

HEX

#173d7d

RGB

rgb(23, 61, 125)

HSL

hsl(217.6, 68.9%, 29%)

HSV / HSB

hsv(217.6, 81.6%, 49%)

CMYK

cmyk(81.6%, 51.2%, 0%, 51%)

LAB

lab(26.73, 11.77, -40.13)

LCH

lch(26.73, 41.82, 286.35)

OKLCH

oklch(37.2%, 0.1171, 260.22)

HWB

hwb(217.6, 9%, 51%)

Harmony colors

Complementary

#7d5717

Analogous

#17707d

#173d7d

#24177d

Triadic

#173d7d

#7d173d

#3d7d17

Split-complementary

#173d7d

#7d2417

#707d17

Tetradic

#173d7d

#57177d

#7d5717

#3d7d17

Square

#173d7d

#7d1770

#7d5717

#177d24

Shades

Color #173d7d mixed toward black.

#133368

#0f2953

#0b1f3e

#08142a

#040a15

Tints

Color #173d7d mixed toward white.

#2056b0

#3371d9

#6695e3

#99b8ec

#ccdcf6

Tones

Color #173d7d mixed toward gray.

#1f3f74

#28416c

#304363

#39465b

#414852

Accessibility

Aa White text on this color

10.5:1

Aa Black text on this color

2:1

White text reads better on this background (10.5:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#2c2c72 · ΔE 7.9

Deuteranopia

#2a276f · ΔE 9.2

Tritanopia

#1a6765 · ΔE 28.2

Achromatopsia

#3f3f3f · ΔE 21.8

Left half is the original, right half is the simulated appearance. See all 8 vision types →

Code

CSS

background-color: #173d7d;

Tailwind (arbitrary value)

bg-[#173d7d]

Related colors

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Royal Blue #4169e1

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#173d7d (#173d7d) is rgb(23, 61, 125) in RGB.

No, #173d7d is not one of the 216 web-safe colors — for that, every RGB channel would have to be a multiple of 51.

Related tools

Colors

HEX to RGB Converter

Convert any HEX color code to its RGB and HSL equivalents, live, with copy-to-clipboard values.

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Contrast Checker

Check the WCAG contrast ratio between any two colors, live, with AA/AAA pass-fail results.

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Palette Generator

Generate complementary, analogous, triadic, split-complementary, tetradic, square, and monochromatic palettes from any base color.

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Build something with this color

Generate a full palette from #173d7d, or check how it holds up for accessibility.

Generate a palette → Check contrast