#b21c08

Color #b21c08

A vivid, highly saturated dark red.

Closest named color Firebrick #b22222 · ΔE 11.35 Nearest Tailwind class red-700 #c10007 · ΔE 2.8

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Conversions

HEX

#b21c08

RGB

rgb(178, 28, 8)

HSL

hsl(7.1, 91.4%, 36.5%)

HSV / HSB

hsv(7.1, 95.5%, 69.8%)

CMYK

cmyk(0%, 84.3%, 95.5%, 30.2%)

LAB

lab(38.4, 56.94, 48.93)

LCH

lch(38.4, 75.08, 40.67)

OKLCH

oklch(49.1%, 0.1859, 30.91)

HWB

hwb(7.1, 3.1%, 30.2%)

Harmony colors

Complementary

#089eb2

Analogous

#b20849

#b21c08

#b27108

Triadic

#b21c08

#08b21c

#1c08b2

Split-complementary

#b21c08

#08b271

#0849b2

Tetradic

#b21c08

#9eb208

#089eb2

#1c08b2

Square

#b21c08

#49b208

#089eb2

#7108b2

Shades

Color #b21c08 mixed toward black.

#941707

#771305

#590e04

#3b0903

#1e0501

Tints

Color #b21c08 mixed toward white.

#e6240a

#f64830

#f87664

#faa398

#fdd1cb

Tones

Color #b21c08 mixed toward gray.

#a42716

#963224

#883d33

#794741

#6b524f

Accessibility

Aa White text on this color

6.86:1

Aa Black text on this color

3.06:1

White text reads better on this background (6.86:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#8b8a0f · ΔE 46.6

Deuteranopia

#919810 · ΔE 51.5

Tritanopia

#ae1314 · ΔE 3.3

Achromatopsia

#5a5a5a · ΔE 28

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

Code

CSS

background-color: #b21c08;

Tailwind (arbitrary value)

bg-[#b21c08]

Related colors

Salmon #fa8072

Misty Rose #ffe4e1

Tomato #ff6347

Red #ff0000

Maroon #800000

Black #000000

Frequently asked questions

#b21c08 (#b21c08) is rgb(178, 28, 8) in RGB.

No, #b21c08 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 #b21c08, or check how it holds up for accessibility.

Generate a palette → Check contrast