#B63B28#B63B28

#B63B28 is a mid, vivid red. Relative luminance 0.132; OKLCH L 52.8% C 0.162 H 31.5°. Best body text is #FFFFFF at 5.76:1 contrast (WCAG AA passes).

Color values

HEX	#B63B28
RGB	rgb(182, 59, 40)
HSL	hsl(8, 64%, 44%)
HSV	hsv(8, 78%, 71%)
CMYK	cmyk(0%, 67.6%, 78%, 28.6%)
CIE-LAB	lab(43.11, 48.65, 38.67)
CIE-LCH	lch(43.11, 62.15, 38.48°)
OKLab	oklab(52.81% 0.1384 0.0849)
OKLCH	oklch(52.81% 0.162 31.5)
XYZ	xyz(21.2408, 13.2294, 3.4421)
Luminance	0.1323 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63B28 #28A3B6

analogous

#B6285C #B63B28 #B68228

triadic

#B63B28 #28B63B #3B28B6

tetradic

#B63B28 #5CB628 #28A3B6 #8228B6

square

#B63B28 #5CB628 #28A3B6 #8228B6

split-complementary

#B63B28 #28B682 #285CB6

monochromatic

#521A12 #842B1D #B63B28 #D65845 #E18577

Accessibility & contrast

On white

5.76

#B63B28 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#B63B28 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63B28

5.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63B28	#FFFFFF	#000000	##FFFFFF
##B63B28	1.00	5.76	3.65	5.76
#FFFFFF	5.76	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E5525

Deuteranopia (green-blind)

#7D7023

Tritanopia (blue-blind)

#C81438

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b63b28;
/* rgb */ color: rgb(182, 59, 40);
/* oklch */ color: oklch(52.8% 0.162 31.5);

Tailwind

colors: {
  custom: {
    50: '#d47863',
    500: '#b63b28',
    950: '#000000',
  },
}

SCSS

$custom: #b63b28;
$custom-light: #d47863;
$custom-dark: #000000;

JSON

{
  "hex": "#b63b28",
  "rgb": {
    "r": 182,
    "g": 59,
    "b": 40
  },
  "hsl": {
    "h": 8.028,
    "s": 63.964,
    "l": 43.529
  },
  "oklch": {
    "l": 0.52812,
    "c": 0.16231,
    "h": 31.5
  },
  "luminance": 0.13226
}

Semantic roles & 50–950 ramp

primary

#B63B28

secondary

#71BDC9

accent

#D1E741

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160905

muted

#847B7A

Preview Lab

Preview with #B63B28

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

Preview Lab → · Contrast checker → · Palette generator →