#172831

Color #172831

A muted very dark blue.

Closest named color Charcoal #36454f · ΔE 13.34 Nearest Tailwind class mist-800 #22292b · ΔE 4.8

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Conversions

HEX

#172831

RGB

rgb(23, 40, 49)

HSL

hsl(200.8, 36.1%, 14.1%)

HSV / HSB

hsv(200.8, 53.1%, 19.2%)

CMYK

cmyk(53.1%, 18.4%, 0%, 80.8%)

LAB

lab(15.07, -4.03, -8.08)

LCH

lch(15.07, 9.03, 243.49)

OKLCH

oklch(26.6%, 0.0282, 232.36)

HWB

hwb(200.8, 9%, 80.8%)

Harmony colors

Complementary

#312017

Analogous

#17312d

#172831

#171b31

Triadic

#172831

#311728

#283117

Split-complementary

#172831

#31171b

#312d17

Tetradic

#172831

#201731

#312017

#283117

Square

#172831

#2d1731

#312017

#1b3117

Shades

Color #172831 mixed toward black.

#132129

#0f1b21

#0b1418

#080d10

#040708

Tints

Color #172831 mixed toward white.

#2e5063

#467994

#6a9eb9

#9cbed0

#cddfe8

Tones

Color #172831 mixed toward gray.

#19272f

#1b272d

#1d262a

#202528

#222526

Accessibility

Aa White text on this color

15.17:1

Aa Black text on this color

1.38:1

White text reads better on this background (15.17:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#1f202f · ΔE 10.5

Deuteranopia

#1e1d2e · ΔE 12.5

Tritanopia

#182d2d · ΔE 6.9

Achromatopsia

#262626 · ΔE 8.2

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

Code

CSS

background-color: #172831;

Tailwind (arbitrary value)

bg-[#172831]

Related colors

Light Sky Blue #87cefa

Charcoal #36454f

Sky Blue #87ceeb

Deep Sky Blue #00bfff

Light Blue #add8e6

Steel Blue #4682b4

Frequently asked questions

#172831 (#172831) is rgb(23, 40, 49) in RGB.

No, #172831 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 #172831, or check how it holds up for accessibility.

Generate a palette → Check contrast