#B63F3A#B63F3A

#B63F3A is a mid, vivid red. Relative luminance 0.138; OKLCH L 53.5% C 0.155 H 26.2°. Best body text is #FFFFFF at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#B63F3A
RGB	rgb(182, 63, 58)
HSL	hsl(2, 52%, 47%)
HSV	hsv(2, 68%, 71%)
CMYK	cmyk(0%, 65.4%, 68.1%, 28.6%)
CIE-LAB	lab(43.96, 47.79, 29.36)
CIE-LCH	lch(43.96, 56.09, 31.57°)
OKLab	oklab(53.52% 0.1393 0.0684)
OKLCH	oklch(53.52% 0.155 26.2)
XYZ	xyz(21.8349, 13.8087, 5.5177)
Luminance	0.1381 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63F3A #3AB1B6

analogous

#B63A73 #B63F3A #B67D3A

triadic

#B63F3A #3AB63F #3F3AB6

tetradic

#B63F3A #73B63A #3AB1B6 #7D3AB6

square

#B63F3A #73B63A #3AB1B6 #7D3AB6

split-complementary

#B63F3A #3AB67D #3A73B6

monochromatic

#591F1C #882F2B #B63F3A #CD6561 #DB928F

Accessibility & contrast

On white

5.58

#B63F3A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#B63F3A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63F3A

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63F3A	#FFFFFF	#000000	##FFFFFF
##B63F3A	1.00	5.58	3.76	5.58
#FFFFFF	5.58	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F5839

Deuteranopia (green-blind)

#7D7137

Tritanopia (blue-blind)

#C8223F

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #b63f3a;
/* rgb */ color: rgb(182, 63, 58);
/* oklch */ color: oklch(53.5% 0.155 26.2);

Tailwind

colors: {
  custom: {
    50: '#d37a70',
    500: '#b63f3a',
    950: '#000000',
  },
}

SCSS

$custom: #b63f3a;
$custom-light: #d37a70;
$custom-dark: #000000;

JSON

{
  "hex": "#b63f3a",
  "rgb": {
    "r": 182,
    "g": 63,
    "b": 58
  },
  "hsl": {
    "h": 2.419,
    "s": 51.667,
    "l": 47.059
  },
  "oklch": {
    "l": 0.53522,
    "c": 0.1552,
    "h": 26.2
  },
  "luminance": 0.13806
}

Semantic roles & 50–950 ramp

primary

#B63F3A

secondary

#86C4C6

accent

#D5DB4D

background

#FDF7F6

surface

#FBEEEC

border

#D4C9C7

text

#150A07

muted

#837C7A

Preview Lab

Preview with #B63F3A

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

Preview Lab → · Contrast checker → · Palette generator →