#B8312B#B8312B

#B8312B is a mid, vivid red. Relative luminance 0.126; OKLCH L 52.1% C 0.173 H 27.5°. Best body text is #FFFFFF at 5.98:1 contrast (WCAG AA passes).

Color values

HEX	#B8312B
RGB	rgb(184, 49, 43)
HSL	hsl(3, 62%, 45%)
HSV	hsv(3, 77%, 72%)
CMYK	cmyk(0%, 73.4%, 76.6%, 27.8%)
CIE-LAB	lab(42.10, 53.29, 36.05)
CIE-LCH	lch(42.10, 64.34, 34.08°)
OKLab	oklab(52.14% 0.1533 0.0799)
OKLCH	oklch(52.14% 0.173 27.5)
XYZ	xyz(21.3040, 12.5647, 3.5885)
Luminance	0.1256 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B8312B #2BB2B8

analogous

#B82B6C #B8312B #B8782B

triadic

#B8312B #2BB831 #312BB8

tetradic

#B8312B #6CB82B #2BB2B8 #782BB8

square

#B8312B #6CB82B #2BB2B8 #782BB8

split-complementary

#B8312B #2BB878 #2B6CB8

monochromatic

#551714 #86241F #B8312B #D5514B #E1817D

Accessibility & contrast

On white

5.98

#B8312B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#B8312B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B8312B

5.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B8312B	#FFFFFF	#000000	##FFFFFF
##B8312B	1.00	5.98	3.51	5.98
#FFFFFF	5.98	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595129

Deuteranopia (green-blind)

#7B6E26

Tritanopia (blue-blind)

#CB0031

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b8312b;
/* rgb */ color: rgb(184, 49, 43);
/* oklch */ color: oklch(52.1% 0.173 27.5);

Tailwind

colors: {
  custom: {
    50: '#d67365',
    500: '#b8312b',
    950: '#000000',
  },
}

SCSS

$custom: #b8312b;
$custom-light: #d67365;
$custom-dark: #000000;

JSON

{
  "hex": "#b8312b",
  "rgb": {
    "r": 184,
    "g": 49,
    "b": 43
  },
  "hsl": {
    "h": 2.553,
    "s": 62.115,
    "l": 44.51
  },
  "oklch": {
    "l": 0.52137,
    "c": 0.17283,
    "h": 27.5
  },
  "luminance": 0.12561
}

Semantic roles & 50–950 ramp

primary

#B8312B

secondary

#76C5C9

accent

#DEE543

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160905

muted

#847B7A

Preview Lab

Preview with #B8312B

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

Preview Lab → · Contrast checker → · Palette generator →