#21212f

Color #21212f

A muted very dark blue.

Closest named color Black #000000 · ΔE 16.69 Nearest Tailwind class gray-900 #101828 · ΔE 4.8

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Conversions

HEX

#21212f

RGB

rgb(33, 33, 47)

HSL

hsl(240, 17.5%, 15.7%)

HSV / HSB

hsv(240, 29.8%, 18.4%)

CMYK

cmyk(29.8%, 29.8%, 0%, 81.6%)

LAB

lab(13.33, 3.93, -9.24)

LCH

lch(13.33, 10.04, 293.04)

OKLCH

oklch(25.4%, 0.0262, 284.35)

HWB

hwb(240, 12.9%, 81.6%)

Harmony colors

Complementary

#2f2f21

Analogous

#21282f

#21212f

#28212f

Triadic

#21212f

#2f2121

#212f21

Split-complementary

#21212f

#2f2821

#282f21

Tetradic

#21212f

#2f212f

#2f2f21

#212f21

Square

#21212f

#2f2128

#2f2f21

#212f28

Shades

Color #21212f mixed toward black.

#1c1c27

#16161f

#111118

#0b0b10

#060608

Tints

Color #21212f mixed toward white.

#3f3f59

#5c5c83

#8181a6

#ababc4

#d5d5e1

Tones

Color #21212f mixed toward gray.

#22222e

#23232d

#25252c

#26262a

#272729

Accessibility

Aa White text on this color

15.87:1

Aa Black text on this color

1.32:1

White text reads better on this background (15.87:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#21212c · ΔE 1.6

Deuteranopia

#21212b · ΔE 2.2

Tritanopia

#212a29 · ΔE 12.4

Achromatopsia

#222222 · ΔE 8.8

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

Code

CSS

background-color: #21212f;

Tailwind (arbitrary value)

bg-[#21212f]

Related colors

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Medium Blue #0000cd

Frequently asked questions

#21212f (#21212f) is rgb(33, 33, 47) in RGB.

No, #21212f 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.

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Build something with this color

Generate a full palette from #21212f, or check how it holds up for accessibility.

Generate a palette → Check contrast