#B63031#B63031

#B63031 is a mid, vivid red. Relative luminance 0.123; OKLCH L 51.8% C 0.171 H 25.1°. Best body text is #FFFFFF at 6.08:1 contrast (WCAG AA passes).

Color values

HEX	#B63031
RGB	rgb(182, 48, 49)
HSL	hsl(360, 58%, 45%)
HSV	hsv(360, 74%, 71%)
CMYK	cmyk(0%, 73.6%, 73.1%, 28.6%)
CIE-LAB	lab(41.66, 53.26, 31.98)
CIE-LCH	lch(41.66, 62.13, 30.98°)
OKLab	oklab(51.77% 0.1547 0.0726)
OKLCH	oklch(51.77% 0.171 25.1)
XYZ	xyz(20.9051, 12.2839, 4.1754)
Luminance	0.1228 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63031 #30B6B5

analogous

#B63074 #B63031 #B67230

triadic

#B63031 #31B630 #3031B6

tetradic

#B63031 #74B630 #30B6B5 #7230B6

square

#B63031 #74B630 #30B6B5 #7230B6

split-complementary

#B63031 #30B672 #3074B6

monochromatic

#551617 #862324 #B63031 #D15253 #DE8283

Accessibility & contrast

On white

6.08

#B63031 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.46

#B63031 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63031

6.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63031	#FFFFFF	#000000	##FFFFFF
##B63031	1.00	6.08	3.46	6.08
#FFFFFF	6.08	1.00	21.00	1.00
#000000	3.46	21.00	1.00	21.00
##FFFFFF	6.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#575030

Deuteranopia (green-blind)

#796D2C

Tritanopia (blue-blind)

#C80032

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b63031;
/* rgb */ color: rgb(182, 48, 49);
/* oklch */ color: oklch(51.8% 0.171 25.1);

Tailwind

colors: {
  custom: {
    50: '#d47269',
    500: '#b63031',
    950: '#000000',
  },
}

SCSS

$custom: #b63031;
$custom-light: #d47269;
$custom-dark: #000000;

JSON

{
  "hex": "#b63031",
  "rgb": {
    "r": 182,
    "g": 48,
    "b": 49
  },
  "hsl": {
    "h": 359.552,
    "s": 58.261,
    "l": 45.098
  },
  "oklch": {
    "l": 0.51767,
    "c": 0.17088,
    "h": 25.1
  },
  "luminance": 0.12281
}

Semantic roles & 50–950 ramp

primary

#B63031

secondary

#7BC7C7

accent

#E1E046

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B63031

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

Preview Lab → · Contrast checker → · Palette generator →