#B4312A#B4312A

#B4312A is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.4% C 0.169 H 27.8°. Best body text is #FFFFFF at 6.15:1 contrast (WCAG AA passes).

Color values

HEX	#B4312A
RGB	rgb(180, 49, 42)
HSL	hsl(3, 62%, 44%)
HSV	hsv(3, 77%, 71%)
CMYK	cmyk(0%, 72.8%, 76.7%, 29.4%)
CIE-LAB	lab(41.33, 51.97, 35.56)
CIE-LCH	lch(41.33, 62.98, 34.38°)
OKLab	oklab(51.42% 0.1494 0.0788)
OKLCH	oklch(51.42% 0.169 27.8)
XYZ	xyz(20.3410, 12.0702, 3.4488)
Luminance	0.1207 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4312A #2AADB4

analogous

#B42A68 #B4312A #B4762A

triadic

#B4312A #2AB431 #312AB4

tetradic

#B4312A #68B42A #2AADB4 #762AB4

square

#B4312A #68B42A #2AADB4 #762AB4

split-complementary

#B4312A #2AB476 #2A68B4

monochromatic

#511613 #82231E #B4312A #D44E47 #E07E79

Accessibility & contrast

On white

6.15

#B4312A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#B4312A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4312A

6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4312A	#FFFFFF	#000000	##FFFFFF
##B4312A	1.00	6.15	3.41	6.15
#FFFFFF	6.15	1.00	21.00	1.00
#000000	3.41	21.00	1.00	21.00
##FFFFFF	6.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#584F28

Deuteranopia (green-blind)

#786C25

Tritanopia (blue-blind)

#C60031

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b4312a;
/* rgb */ color: rgb(180, 49, 42);
/* oklch */ color: oklch(51.4% 0.169 27.8);

Tailwind

colors: {
  custom: {
    50: '#d37364',
    500: '#b4312a',
    950: '#000000',
  },
}

SCSS

$custom: #b4312a;
$custom-light: #d37364;
$custom-dark: #000000;

JSON

{
  "hex": "#b4312a",
  "rgb": {
    "r": 180,
    "g": 49,
    "b": 42
  },
  "hsl": {
    "h": 3.043,
    "s": 62.162,
    "l": 43.529
  },
  "oklch": {
    "l": 0.51419,
    "c": 0.1689,
    "h": 27.8
  },
  "luminance": 0.12067
}

Semantic roles & 50–950 ramp

primary

#B4312A

secondary

#72C3C8

accent

#DDE543

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160905

muted

#847B7A

Preview Lab

Preview with #B4312A

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

Preview Lab → · Contrast checker → · Palette generator →