#B63F28#B63F28

#B63F28 is a mid, vivid red. Relative luminance 0.137; OKLCH L 53.3% C 0.159 H 33.0°. Best body text is #FFFFFF at 5.63:1 contrast (WCAG AA passes).

Color values

HEX	#B63F28
RGB	rgb(182, 63, 40)
HSL	hsl(10, 64%, 44%)
HSV	hsv(10, 78%, 71%)
CMYK	cmyk(0%, 65.4%, 78%, 28.6%)
CIE-LAB	lab(43.74, 46.95, 39.32)
CIE-LCH	lch(43.74, 61.24, 39.95°)
OKLab	oklab(53.29% 0.1331 0.0863)
OKLCH	oklch(53.29% 0.159 33)
XYZ	xyz(21.4543, 13.6564, 3.5133)
Luminance	0.1365 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63F28 #289FB6

analogous

#B62858 #B63F28 #B68628

triadic

#B63F28 #28B63F #3F28B6

tetradic

#B63F28 #58B628 #289FB6 #8628B6

square

#B63F28 #58B628 #289FB6 #8628B6

split-complementary

#B63F28 #28B686 #2858B6

monochromatic

#521C12 #842E1D #B63F28 #D65D45 #E18877

Accessibility & contrast

On white

5.63

#B63F28 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.73

#B63F28 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63F28

5.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63F28	#FFFFFF	#000000	##FFFFFF
##B63F28	1.00	5.63	3.73	5.63
#FFFFFF	5.63	1.00	21.00	1.00
#000000	3.73	21.00	1.00	21.00
##FFFFFF	5.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#615725

Deuteranopia (green-blind)

#7E7123

Tritanopia (blue-blind)

#C81E3B

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b63f28;
/* rgb */ color: rgb(182, 63, 40);
/* oklch */ color: oklch(53.3% 0.159 33.0);

Tailwind

colors: {
  custom: {
    50: '#d47a63',
    500: '#b63f28',
    950: '#000000',
  },
}

SCSS

$custom: #b63f28;
$custom-light: #d47a63;
$custom-dark: #000000;

JSON

{
  "hex": "#b63f28",
  "rgb": {
    "r": 182,
    "g": 63,
    "b": 40
  },
  "hsl": {
    "h": 9.718,
    "s": 63.964,
    "l": 43.529
  },
  "oklch": {
    "l": 0.53285,
    "c": 0.15859,
    "h": 33
  },
  "luminance": 0.13653
}

Semantic roles & 50–950 ramp

primary

#B63F28

secondary

#71BBC9

accent

#CCE741

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160A05

muted

#847C7A

Preview Lab

Preview with #B63F28

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

Preview Lab → · Contrast checker → · Palette generator →