#B8313A#B8313A

#B8313A is a mid, vivid red. Relative luminance 0.127; OKLCH L 52.4% C 0.171 H 22.0°. Best body text is #FFFFFF at 5.93:1 contrast (WCAG AA passes).

Color values

HEX	#B8313A
RGB	rgb(184, 49, 58)
HSL	hsl(356, 58%, 46%)
HSV	hsv(356, 73%, 72%)
CMYK	cmyk(0%, 73.4%, 68.5%, 27.8%)
CIE-LAB	lab(42.30, 53.97, 27.43)
CIE-LCH	lch(42.30, 60.54, 26.94°)
OKLab	oklab(52.35% 0.1587 0.0641)
OKLCH	oklch(52.35% 0.171 22)
XYZ	xyz(21.6316, 12.6957, 5.3137)
Luminance	0.1269 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B8313A #31B8AF

analogous

#B8317D #B8313A #B86B31

triadic

#B8313A #3AB831 #313AB8

tetradic

#B8313A #7DB831 #31B8AF #6B31B8

square

#B8313A #7DB831 #31B8AF #6B31B8

split-complementary

#B8313A #31B86B #317DB8

monochromatic

#57171C #88242B #B8313A #D2555D #DE858B

Accessibility & contrast

On white

5.93

#B8313A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#B8313A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B8313A

5.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B8313A	#FFFFFF	#000000	##FFFFFF
##B8313A	1.00	5.93	3.54	5.93
#FFFFFF	5.93	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585139

Deuteranopia (green-blind)

#796E36

Tritanopia (blue-blind)

#CA0036

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b8313a;
/* rgb */ color: rgb(184, 49, 58);
/* oklch */ color: oklch(52.4% 0.171 22.0);

Tailwind

colors: {
  custom: {
    50: '#d57370',
    500: '#b8313a',
    950: '#000000',
  },
}

SCSS

$custom: #b8313a;
$custom-light: #d57370;
$custom-dark: #000000;

JSON

{
  "hex": "#b8313a",
  "rgb": {
    "r": 184,
    "g": 49,
    "b": 58
  },
  "hsl": {
    "h": 356,
    "s": 57.94,
    "l": 45.686
  },
  "oklch": {
    "l": 0.52352,
    "c": 0.17109,
    "h": 22
  },
  "luminance": 0.12692
}

Semantic roles & 50–950 ramp

primary

#B8313A

secondary

#7DC8C3

accent

#E1D747

background

#FEF7F6

surface

#FCEDEC

border

#D5C8C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #B8313A

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

Preview Lab → · Contrast checker → · Palette generator →