#173879

Color #173879

A moderately saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 13.83 Nearest Tailwind class blue-900 #1c398e · ΔE 3.5

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

Conversions

HEX

#173879

RGB

rgb(23, 56, 121)

HSL

hsl(219.8, 68.1%, 28.2%)

HSV / HSB

hsv(219.8, 81%, 47.5%)

CMYK

cmyk(81%, 53.7%, 0%, 52.5%)

LAB

lab(24.92, 13.64, -40.53)

LCH

lch(24.92, 42.76, 288.6)

OKLCH

oklch(35.7%, 0.1178, 262.05)

HWB

hwb(219.8, 9%, 52.5%)

Harmony colors

Complementary

#795817

Analogous

#176979

#173879

#271779

Triadic

#173879

#791738

#387917

Split-complementary

#173879

#792717

#697917

Tetradic

#173879

#581779

#795817

#387917

Square

#173879

#791769

#795817

#177927

Shades

Color #173879 mixed toward black.

#132f65

#0f2551

#0b1c3c

#081328

#040914

Tints

Color #173879 mixed toward white.

#2150ac

#326ad8

#658fe2

#98b4ec

#ccdaf5

Tones

Color #173879 mixed toward gray.

#1f3b71

#273d69

#2f4060

#384358

#404550

Accessibility

Aa White text on this color

11.18:1

Aa Black text on this color

1.88:1

White text reads better on this background (11.18:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#29296e · ΔE 6.9

Deuteranopia

#27246b · ΔE 8.2

Tritanopia

#1a6361 · ΔE 28.6

Achromatopsia

#3b3b3b · ΔE 22.1

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

Code

CSS

background-color: #173879;

Tailwind (arbitrary value)

bg-[#173879]

Related colors

Cornflower Blue #6495ed

Royal Blue #4169e1

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#173879 (#173879) is rgb(23, 56, 121) in RGB.

No, #173879 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.

Try it → Accessibility

Contrast Checker

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

Try it → Generators

Palette Generator

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

Try it →

Build something with this color

Generate a full palette from #173879, or check how it holds up for accessibility.

Generate a palette → Check contrast