#191721

Color #191721

A muted very dark blue.

Closest named color Black #000000 · ΔE 11.32 Nearest Tailwind class mauve-900 #1d161e · ΔE 3

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

Conversions

HEX

#191721

RGB

rgb(25, 23, 33)

HSL

hsl(252, 17.9%, 11%)

HSV / HSB

hsv(252, 30.3%, 12.9%)

CMYK

cmyk(24.2%, 30.3%, 0%, 87.1%)

LAB

lab(8.39, 3.77, -6.59)

LCH

lch(8.39, 7.59, 299.77)

OKLCH

oklch(21.2%, 0.0197, 293.96)

HWB

hwb(252, 9%, 87.1%)

Harmony colors

Complementary

#1f2117

Analogous

#171a21

#191721

#1e1721

Triadic

#191721

#211917

#172119

Split-complementary

#191721

#211e17

#1a2117

Tetradic

#191721

#21171f

#1f2117

#172119

Square

#191721

#21171a

#1f2117

#17211e

Shades

Color #191721 mixed toward black.

#15131c

#110f16

#0d0c11

#08080b

#040406

Tints

Color #191721 mixed toward white.

#3b364e

#5d557a

#8179a2

#aba6c1

#d5d2e0

Tones

Color #191721 mixed toward gray.

#1a1820

#1a191f

#1b1a1f

#1b1a1e

#1c1b1d

Accessibility

Aa White text on this color

17.71:1

Aa Black text on this color

1.19:1

White text reads better on this background (17.71:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#18181f · ΔE 2.5

Deuteranopia

#18181e · ΔE 3.1

Tritanopia

#191d1d · ΔE 9

Achromatopsia

#181818 · ΔE 7.3

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

Code

CSS

background-color: #191721;

Tailwind (arbitrary value)

bg-[#191721]

Related colors

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Slate Blue #6a5acd

Medium Purple #9370db

Navy #000080

Lavender #e6e6fa

Frequently asked questions

#191721 (#191721) is rgb(25, 23, 33) in RGB.

No, #191721 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 #191721, or check how it holds up for accessibility.

Generate a palette → Check contrast