#B63A3F#B63A3F

#B63A3F is a mid, vivid red. Relative luminance 0.133; OKLCH L 53.0% C 0.160 H 22.3°. Best body text is #FFFFFF at 5.73:1 contrast (WCAG AA passes).

Color values

HEX	#B63A3F
RGB	rgb(182, 58, 63)
HSL	hsl(358, 52%, 47%)
HSV	hsv(358, 68%, 71%)
CMYK	cmyk(0%, 68.1%, 65.4%, 28.6%)
CIE-LAB	lab(43.26, 50.18, 25.51)
CIE-LCH	lch(43.26, 56.29, 26.95°)
OKLab	oklab(53.03% 0.1479 0.0605)
OKLCH	oklch(53.03% 0.16 22.3)
XYZ	xyz(21.7039, 13.3332, 6.1324)
Luminance	0.1333 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63A3F #3AB6B1

analogous

#B63A7D #B63A3F #B6733A

triadic

#B63A3F #3FB63A #3A3FB6

tetradic

#B63A3F #7DB63A #3AB6B1 #733AB6

square

#B63A3F #7DB63A #3AB6B1 #733AB6

split-complementary

#B63A3F #3AB673 #3A7DB6

monochromatic

#591C1F #882B2F #B63A3F #CD6165 #DB8F92

Accessibility & contrast

On white

5.73

#B63A3F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#B63A3F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63A3F

5.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63A3F	#FFFFFF	#000000	##FFFFFF
##B63A3F	1.00	5.73	3.67	5.73
#FFFFFF	5.73	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B553E

Deuteranopia (green-blind)

#7B703B

Tritanopia (blue-blind)

#C81A3D

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b63a3f;
/* rgb */ color: rgb(182, 58, 63);
/* oklch */ color: oklch(53.0% 0.160 22.3);

Tailwind

colors: {
  custom: {
    50: '#d37874',
    500: '#b63a3f',
    950: '#000000',
  },
}

SCSS

$custom: #b63a3f;
$custom-light: #d37874;
$custom-dark: #000000;

JSON

{
  "hex": "#b63a3f",
  "rgb": {
    "r": 182,
    "g": 58,
    "b": 63
  },
  "hsl": {
    "h": 357.581,
    "s": 51.667,
    "l": 47.059
  },
  "oklch": {
    "l": 0.53026,
    "c": 0.15977,
    "h": 22.3
  },
  "luminance": 0.1333
}

Semantic roles & 50–950 ramp

primary

#B63A3F

secondary

#86C6C4

accent

#DBD54D

background

#FDF7F7

surface

#FBEEED

border

#D4C9C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B63A3F

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

Preview Lab → · Contrast checker → · Palette generator →