#a21b08

Color #a21b08

A vivid, highly saturated dark red.

Closest named color Dark Red #8b0000 · ΔE 8.04 Nearest Tailwind class red-800 #9f0712 · ΔE 4.1

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

Conversions

HEX

#a21b08

RGB

rgb(162, 27, 8)

HSL

hsl(7.4, 90.6%, 33.3%)

HSV / HSB

hsv(7.4, 95.1%, 63.5%)

CMYK

cmyk(0%, 83.3%, 95.1%, 36.5%)

LAB

lab(34.97, 52.5, 45.18)

LCH

lch(34.97, 69.26, 40.71)

OKLCH

oklch(46%, 0.1718, 31.12)

HWB

hwb(7.4, 3.1%, 36.5%)

Harmony colors

Complementary

#088fa2

Analogous

#a20842

#a21b08

#a26808

Triadic

#a21b08

#08a21b

#1b08a2

Split-complementary

#a21b08

#08a268

#0842a2

Tetradic

#a21b08

#8fa208

#088fa2

#1b08a2

Square

#a21b08

#42a208

#088fa2

#6808a2

Shades

Color #a21b08 mixed toward black.

#871607

#6c1205

#510d04

#360903

#1b0401

Tints

Color #a21b08 mixed toward white.

#d8240b

#f44027

#f7705d

#faa093

#fccfc9

Tones

Color #a21b08 mixed toward gray.

#952515

#882e22

#7b382e

#6f423b

#624b48

Accessibility

Aa White text on this color

7.79:1

Aa Black text on this color

2.7:1

White text reads better on this background (7.79:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#7e7d0e · ΔE 43.7

Deuteranopia

#848b10 · ΔE 48.6

Tritanopia

#9e1213 · ΔE 3.5

Achromatopsia

#525252 · ΔE 27.2

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

Code

CSS

background-color: #a21b08;

Tailwind (arbitrary value)

bg-[#a21b08]

Related colors

Salmon #fa8072

Misty Rose #ffe4e1

Tomato #ff6347

Red #ff0000

Maroon #800000

Black #000000

Frequently asked questions

#a21b08 (#a21b08) is rgb(162, 27, 8) in RGB.

No, #a21b08 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 #a21b08, or check how it holds up for accessibility.

Generate a palette → Check contrast