Firebrick#B22222

#B22222 is a mid, vivid red. Relative luminance 0.107; OKLCH L 49.7% C 0.180 H 26.8°. Best body text is #FFFFFF at 6.68:1 contrast (WCAG AA passes).

Firebrick — editorial page

Color values

HEX	#B22222
RGB	rgb(178, 34, 34)
HSL	hsl(0, 68%, 42%)
HSV	hsv(0, 81%, 70%)
CMYK	cmyk(0%, 80.9%, 80.9%, 30.2%)
CIE-LAB	lab(39.12, 55.92, 37.65)
CIE-LCH	lch(39.12, 67.41, 33.95°)
OKLab	oklab(49.68% 0.1604 0.0811)
OKLCH	oklch(49.68% 0.18 26.8)
XYZ	xyz(19.2232, 10.7277, 2.5715)
Luminance	0.1072 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B22222 #22B2B2

analogous

#B2226A #B22222 #B26A22

triadic

#B22222 #22B222 #2222B2

tetradic

#B22222 #6AB222 #22B2B2 #6A22B2

square

#B22222 #6AB222 #22B2B2 #6A22B2

split-complementary

#B22222 #22B26A #226AB2

monochromatic

#4B0E0E #7F1818 #B22222 #D93838 #E36C6C

Accessibility & contrast

On white

6.68

#B22222 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#B22222 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B22222

6.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B22222	#FFFFFF	#000000	##FFFFFF
##B22222	1.00	6.68	3.15	6.68
#FFFFFF	6.68	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#514820

Deuteranopia (green-blind)

#74671B

Tritanopia (blue-blind)

#C40024

Achromatopsia (no color)

#5C5C5C

Related colors

#9F211F

#8D201D

#7B1F1A

#691D18

#581A15

#471813

#37140F

#28110B

#1A0A05

#000000

#BE3F35

#C95649

#D36C5E

#DC8173

#E49689

#ECABA0

#F2C0B7

#F7D5CE

#FCEAE6

#FFFFFF

#AB2D28

#A4362E

#9D3D33

#954339

Palettes with this color

Off White Color Palette

Design tokens & code

CSS

--color: #b22222;
/* rgb */ color: rgb(178, 34, 34);
/* oklch */ color: oklch(49.7% 0.180 26.8);

Tailwind

colors: {
  custom: {
    50: '#d36c5e',
    500: '#b22222',
    950: '#000000',
  },
}

SCSS

$custom: #b22222;
$custom-light: #d36c5e;
$custom-dark: #000000;

JSON

{
  "hex": "#b22222",
  "rgb": {
    "r": 178,
    "g": 34,
    "b": 34
  },
  "hsl": {
    "h": 0,
    "s": 67.925,
    "l": 41.569
  },
  "oklch": {
    "l": 0.49677,
    "c": 0.17969,
    "h": 26.8
  },
  "luminance": 0.10725
}

Semantic roles & 50–950 ramp

primary

#B22222

secondary

#67C9C9

accent

#EBEB3D

background

#FEF6F5

surface

#FCECE9

border

#D5C7C5

text

#160804

muted

#847A79

Preview Lab

Preview with #B22222

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →