#B33031#B33031

#B33031 is a mid, vivid red. Relative luminance 0.119; OKLCH L 51.2% C 0.168 H 25.0°. Best body text is #FFFFFF at 6.21:1 contrast (WCAG AA passes).

Color values

HEX	#B33031
RGB	rgb(179, 48, 49)
HSL	hsl(360, 58%, 45%)
HSV	hsv(360, 73%, 70%)
CMYK	cmyk(0%, 73.2%, 72.6%, 29.8%)
CIE-LAB	lab(41.09, 52.31, 31.17)
CIE-LCH	lch(41.09, 60.90, 30.79°)
OKLab	oklab(51.24% 0.1521 0.071)
OKLCH	oklch(51.24% 0.168 25)
XYZ	xyz(20.2040, 11.9224, 4.1425)
Luminance	0.1192 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33031 #30B3B2

analogous

#B33073 #B33031 #B37130

triadic

#B33031 #31B330 #3031B3

tetradic

#B33031 #73B330 #30B3B2 #7130B3

square

#B33031 #73B330 #30B3B2 #7130B3

split-complementary

#B33031 #30B371 #3073B3

monochromatic

#521617 #832324 #B33031 #D05051 #DD8081

Accessibility & contrast

On white

6.21

#B33031 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.38

#B33031 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33031

6.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33031	#FFFFFF	#000000	##FFFFFF
##B33031	1.00	6.21	3.38	6.21
#FFFFFF	6.21	1.00	21.00	1.00
#000000	3.38	21.00	1.00	21.00
##FFFFFF	6.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#564F30

Deuteranopia (green-blind)

#776B2C

Tritanopia (blue-blind)

#C50032

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b33031;
/* rgb */ color: rgb(179, 48, 49);
/* oklch */ color: oklch(51.2% 0.168 25.0);

Tailwind

colors: {
  custom: {
    50: '#d27269',
    500: '#b33031',
    950: '#000000',
  },
}

SCSS

$custom: #b33031;
$custom-light: #d27269;
$custom-dark: #000000;

JSON

{
  "hex": "#b33031",
  "rgb": {
    "r": 179,
    "g": 48,
    "b": 49
  },
  "hsl": {
    "h": 359.542,
    "s": 57.709,
    "l": 44.51
  },
  "oklch": {
    "l": 0.51237,
    "c": 0.16782,
    "h": 25
  },
  "luminance": 0.11919
}

Semantic roles & 50–950 ramp

primary

#B33031

secondary

#79C6C5

accent

#E1E047

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160806

muted

#847B7A

Preview Lab

Preview with #B33031

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

Preview Lab → · Contrast checker → · Palette generator →