#171237

Color #171237

A moderately saturated very dark blue.

Closest named color Black #000000 · ΔE 28.8 Nearest Tailwind class indigo-950 #1e1a4d · ΔE 4.8

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Conversions

HEX

#171237

RGB

rgb(23, 18, 55)

HSL

hsl(248.1, 50.7%, 14.3%)

HSV / HSB

hsv(248.1, 67.3%, 21.6%)

CMYK

cmyk(58.2%, 67.3%, 0%, 78.4%)

LAB

lab(8.04, 14.67, -23.44)

LCH

lch(8.04, 27.65, 302.04)

OKLCH

oklch(21.3%, 0.0694, 285.04)

HWB

hwb(248.1, 7.1%, 78.4%)

Harmony colors

Complementary

#323712

Analogous

#121f37

#171237

#291237

Triadic

#171237

#371712

#123717

Split-complementary

#171237

#372912

#1f3712

Tetradic

#171237

#371232

#323712

#123717

Square

#171237

#37121f

#323712

#123729

Shades

Color #171237 mixed toward black.

#130f2e

#0f0c25

#0b091b

#080612

#040309

Tints

Color #171237 mixed toward white.

#2e246e

#4536a5

#695ac9

#9b91db

#cdc8ed

Tones

Color #171237 mixed toward gray.

#191534

#1b1831

#1e1b2e

#201e2b

#222128

Accessibility

Aa White text on this color

17.82:1

Aa Black text on this color

1.18:1

White text reads better on this background (17.82:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#151531 · ΔE 3.6

Deuteranopia

#15162f · ΔE 4.9

Tritanopia

#172b2a · ΔE 23.6

Achromatopsia

#181818 · ΔE 18.4

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

Code

CSS

background-color: #171237;

Tailwind (arbitrary value)

bg-[#171237]

Related colors

Slate Blue #6a5acd

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Frequently asked questions

#171237 (#171237) is rgb(23, 18, 55) in RGB.

No, #171237 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 #171237, or check how it holds up for accessibility.

Generate a palette → Check contrast