#171f31

Color #171f31

A muted very dark blue.

Closest named color Black #000000 · ΔE 17.79 Nearest Tailwind class gray-900 #101828 · ΔE 2.4

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

Conversions

HEX

#171f31

RGB

rgb(23, 31, 49)

HSL

hsl(221.5, 36.1%, 14.1%)

HSV / HSB

hsv(221.5, 53.1%, 19.2%)

CMYK

cmyk(53.1%, 36.7%, 0%, 80.8%)

LAB

lab(11.85, 2.45, -13.04)

LCH

lch(11.85, 13.27, 280.64)

OKLCH

oklch(24.1%, 0.0366, 265.46)

HWB

hwb(221.5, 9%, 80.8%)

Harmony colors

Complementary

#312917

Analogous

#172c31

#171f31

#1c1731

Triadic

#171f31

#31171f

#1f3117

Split-complementary

#171f31

#311c17

#2c3117

Tetradic

#171f31

#291731

#312917

#1f3117

Square

#171f31

#31172c

#312917

#17311c

Shades

Color #171f31 mixed toward black.

#131a29

#0f1521

#0b0f18

#080a10

#040508

Tints

Color #171f31 mixed toward white.

#2e3e63

#465e94

#6a82b9

#9cacd0

#cdd5e8

Tones

Color #171f31 mixed toward gray.

#19202f

#1b212d

#1d212a

#202228

#222326

Accessibility

Aa White text on this color

16.45:1

Aa Black text on this color

1.28:1

White text reads better on this background (16.45:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#1b1b2d · ΔE 4.1

Deuteranopia

#1a1a2c · ΔE 4.2

Tritanopia

#172a29 · ΔE 14.9

Achromatopsia

#1f1f1f · ΔE 10.4

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

Code

CSS

background-color: #171f31;

Tailwind (arbitrary value)

bg-[#171f31]

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

#171f31 (#171f31) is rgb(23, 31, 49) in RGB.

No, #171f31 is not web-safe. The nearest web-safe colors are among its tones and shades below.

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 #171f31, or check how it holds up for accessibility.

Generate a palette → Check contrast