#171521

Color #171521

A muted very dark blue.

Closest named color Black #000000 · ΔE 11.81 Nearest Tailwind class mauve-900 #1d161e · ΔE 3.5

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Conversions

HEX

#171521

RGB

rgb(23, 21, 33)

HSL

hsl(250, 22.2%, 10.6%)

HSV / HSB

hsv(250, 36.4%, 12.9%)

CMYK

cmyk(30.3%, 36.4%, 0%, 87.1%)

LAB

lab(7.48, 4.41, -8)

LCH

lch(7.48, 9.13, 298.87)

OKLCH

oklch(20.4%, 0.0238, 291.71)

HWB

hwb(250, 8.2%, 87.1%)

Harmony colors

Complementary

#1f2115

Analogous

#151921

#171521

#1d1521

Triadic

#171521

#211715

#152117

Split-complementary

#171521

#211d15

#192115

Tetradic

#171521

#21151f

#1f2115

#152117

Square

#171521

#211519

#1f2115

#15211d

Shades

Color #171521 mixed toward black.

#13121c

#0f0e16

#0c0b11

#08070b

#040406

Tints

Color #171521 mixed toward white.

#37334f

#58507e

#7c74a6

#a8a2c4

#d3d1e1

Tones

Color #171521 mixed toward gray.

#181620

#18171f

#19181e

#1a191d

#1a1a1c

Accessibility

Aa White text on this color

18.02:1

Aa Black text on this color

1.17:1

White text reads better on this background (18.02:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#16161f · ΔE 2.4

Deuteranopia

#16161e · ΔE 3

Tritanopia

#171c1c · ΔE 10.5

Achromatopsia

#161616 · ΔE 8.4

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

Code

CSS

background-color: #171521;

Tailwind (arbitrary value)

bg-[#171521]

Related colors

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Slate Blue #6a5acd

Medium Purple #9370db

Navy #000080

Lavender #e6e6fa

Frequently asked questions

#171521 (#171521) is rgb(23, 21, 33) in RGB.

No, #171521 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.

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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 #171521, or check how it holds up for accessibility.

Generate a palette → Check contrast