#B3312A#B3312A

#B3312A is a mid, vivid red. Relative luminance 0.119; OKLCH L 51.2% C 0.168 H 27.8°. Best body text is #FFFFFF at 6.20:1 contrast (WCAG AA passes).

Color values

HEX	#B3312A
RGB	rgb(179, 49, 42)
HSL	hsl(3, 62%, 43%)
HSV	hsv(3, 77%, 70%)
CMYK	cmyk(0%, 72.6%, 76.5%, 29.8%)
CIE-LAB	lab(41.14, 51.65, 35.30)
CIE-LCH	lch(41.14, 62.56, 34.35°)
OKLab	oklab(51.24% 0.1485 0.0783)
OKLCH	oklch(51.24% 0.168 27.8)
XYZ	xyz(20.1090, 11.9506, 3.4379)
Luminance	0.1195 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3312A #2AACB3

analogous

#B32A67 #B3312A #B3752A

triadic

#B3312A #2AB331 #312AB3

tetradic

#B3312A #67B32A #2AACB3 #752AB3

square

#B3312A #67B32A #2AACB3 #752AB3

split-complementary

#B3312A #2AB375 #2A67B3

monochromatic

#501613 #81231E #B3312A #D44E46 #DF7D78

Accessibility & contrast

On white

6.20

#B3312A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.39

#B3312A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3312A

6.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3312A	#FFFFFF	#000000	##FFFFFF
##B3312A	1.00	6.20	3.39	6.20
#FFFFFF	6.20	1.00	21.00	1.00
#000000	3.39	21.00	1.00	21.00
##FFFFFF	6.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#574F28

Deuteranopia (green-blind)

#786B25

Tritanopia (blue-blind)

#C50031

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b3312a;
/* rgb */ color: rgb(179, 49, 42);
/* oklch */ color: oklch(51.2% 0.168 27.8);

Tailwind

colors: {
  custom: {
    50: '#d27264',
    500: '#b3312a',
    950: '#000000',
  },
}

SCSS

$custom: #b3312a;
$custom-light: #d27264;
$custom-dark: #000000;

JSON

{
  "hex": "#b3312a",
  "rgb": {
    "r": 179,
    "g": 49,
    "b": 42
  },
  "hsl": {
    "h": 3.066,
    "s": 61.991,
    "l": 43.333
  },
  "oklch": {
    "l": 0.51243,
    "c": 0.16787,
    "h": 27.8
  },
  "luminance": 0.11947
}

Semantic roles & 50–950 ramp

primary

#B3312A

secondary

#72C3C7

accent

#DDE543

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160905

muted

#847B7A

Preview Lab

Preview with #B3312A

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

Preview Lab → · Contrast checker → · Palette generator →