#221f3b

Color #221f3b

A muted very dark blue.

Closest named color Charcoal #36454f · ΔE 21.99 Nearest Tailwind class slate-900 #0f172b · ΔE 6.7

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Conversions

HEX

#221f3b

RGB

rgb(34, 31, 59)

HSL

hsl(246.4, 31.1%, 17.6%)

HSV / HSB

hsv(246.4, 47.5%, 23.1%)

CMYK

cmyk(42.4%, 47.5%, 0%, 76.9%)

LAB

lab(13.45, 9.69, -17.6)

LCH

lch(13.45, 20.09, 298.84)

OKLCH

oklch(25.8%, 0.0518, 287.07)

HWB

hwb(246.4, 12.2%, 76.9%)

Harmony colors

Complementary

#383b1f

Analogous

#1f2a3b

#221f3b

#301f3b

Triadic

#221f3b

#3b221f

#1f3b22

Split-complementary

#221f3b

#3b301f

#2a3b1f

Tetradic

#221f3b

#3b1f38

#383b1f

#1f3b22

Square

#221f3b

#3b1f2a

#383b1f

#1f3b30

Shades

Color #221f3b mixed toward black.

#1c1a31

#171527

#110f1d

#0b0a14

#06050a

Tints

Color #221f3b mixed toward white.

#3c3769

#574f97

#7c75b7

#a8a3cf

#d3d1e7

Tones

Color #221f3b mixed toward gray.

#242139

#262436

#272634

#292832

#2b2b2f

Accessibility

Aa White text on this color

15.82:1

Aa Black text on this color

1.33:1

White text reads better on this background (15.82:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#212136 · ΔE 3.4

Deuteranopia

#212134 · ΔE 4.3

Tritanopia

#223130 · ΔE 20.2

Achromatopsia

#222222 · ΔE 15

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

Code

CSS

background-color: #221f3b;

Tailwind (arbitrary value)

bg-[#221f3b]

Related colors

Slate Blue #6a5acd

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Frequently asked questions

#221f3b (#221f3b) is rgb(34, 31, 59) in RGB.

No, #221f3b 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

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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 #221f3b, or check how it holds up for accessibility.

Generate a palette → Check contrast