#1d172e

Color #1d172e

A muted very dark blue.

Closest named color Black #000000 · ΔE 19.74 Nearest Tailwind class slate-900 #0f172b · ΔE 6.5

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Conversions

HEX

#1d172e

RGB

rgb(29, 23, 46)

HSL

hsl(255.7, 33.3%, 13.5%)

HSV / HSB

hsv(255.7, 50%, 18%)

CMYK

cmyk(37%, 50%, 0%, 82%)

LAB

lab(9.57, 9.54, -14.39)

LCH

lch(9.57, 17.27, 303.54)

OKLCH

oklch(22.4%, 0.0443, 294.54)

HWB

hwb(255.7, 9%, 82%)

Harmony colors

Complementary

#282e17

Analogous

#171c2e

#1d172e

#28172e

Triadic

#1d172e

#2e1d17

#172e1d

Split-complementary

#1d172e

#2e2817

#1c2e17

Tetradic

#1d172e

#2e1728

#282e17

#172e1d

Square

#1d172e

#2e171c

#282e17

#172e28

Shades

Color #1d172e mixed toward black.

#181326

#130f1f

#0e0b17

#0a080f

#050408

Tints

Color #1d172e mixed toward white.

#3c2f5f

#5b4890

#7f6cb5

#aa9dce

#d4cee6

Tones

Color #1d172e mixed toward gray.

#1e192c

#1f1b2a

#201d28

#211f26

#222124

Accessibility

Aa White text on this color

17.29:1

Aa Black text on this color

1.21:1

White text reads better on this background (17.29:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#1b1b2a · ΔE 5.3

Deuteranopia

#1b1b29 · ΔE 5.7

Tritanopia

#1d2625 · ΔE 18.1

Achromatopsia

#1b1b1b · ΔE 13.9

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

Code

CSS

background-color: #1d172e;

Tailwind (arbitrary value)

bg-[#1d172e]

Related colors

Medium Purple #9370db

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Slate Blue #6a5acd

Rebecca Purple #663399

Blue Violet #8a2be2

Frequently asked questions

#1d172e (#1d172e) is rgb(29, 23, 46) in RGB.

No, #1d172e 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 #1d172e, or check how it holds up for accessibility.

Generate a palette → Check contrast