#B63A28#B63A28

#B63A28 is a mid, vivid red. Relative luminance 0.131; OKLCH L 52.7% C 0.163 H 31.2°. Best body text is #FFFFFF at 5.79:1 contrast (WCAG AA passes).

Color values

HEX	#B63A28
RGB	rgb(182, 58, 40)
HSL	hsl(8, 64%, 44%)
HSV	hsv(8, 78%, 71%)
CMYK	cmyk(0%, 68.1%, 78%, 28.6%)
CIE-LAB	lab(42.95, 49.06, 38.51)
CIE-LCH	lch(42.95, 62.37, 38.13°)
OKLab	oklab(52.7% 0.1396 0.0845)
OKLCH	oklch(52.7% 0.163 31.2)
XYZ	xyz(21.1899, 13.1276, 3.4252)
Luminance	0.1312 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63A28 #28A4B6

analogous

#B6285D #B63A28 #B68128

triadic

#B63A28 #28B63A #3A28B6

tetradic

#B63A28 #5DB628 #28A4B6 #8128B6

square

#B63A28 #5DB628 #28A4B6 #8128B6

split-complementary

#B63A28 #28B681 #285DB6

monochromatic

#521A12 #842A1D #B63A28 #D65745 #E18577

Accessibility & contrast

On white

5.79

#B63A28 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.62

#B63A28 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63A28

5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63A28	#FFFFFF	#000000	##FFFFFF
##B63A28	1.00	5.79	3.62	5.79
#FFFFFF	5.79	1.00	21.00	1.00
#000000	3.62	21.00	1.00	21.00
##FFFFFF	5.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E5425

Deuteranopia (green-blind)

#7D6F23

Tritanopia (blue-blind)

#C81237

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b63a28;
/* rgb */ color: rgb(182, 58, 40);
/* oklch */ color: oklch(52.7% 0.163 31.2);

Tailwind

colors: {
  custom: {
    50: '#d47763',
    500: '#b63a28',
    950: '#000000',
  },
}

SCSS

$custom: #b63a28;
$custom-light: #d47763;
$custom-dark: #000000;

JSON

{
  "hex": "#b63a28",
  "rgb": {
    "r": 182,
    "g": 58,
    "b": 40
  },
  "hsl": {
    "h": 7.606,
    "s": 63.964,
    "l": 43.529
  },
  "oklch": {
    "l": 0.52698,
    "c": 0.16323,
    "h": 31.2
  },
  "luminance": 0.13124
}

Semantic roles & 50–950 ramp

primary

#B63A28

secondary

#71BEC9

accent

#D2E741

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160905

muted

#847B7A

Preview Lab

Preview with #B63A28

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

Preview Lab → · Contrast checker → · Palette generator →