#B63A3C#B63A3C

#B63A3C is a mid, vivid red. Relative luminance 0.133; OKLCH L 53.0% C 0.160 H 23.6°. Best body text is #FFFFFF at 5.74:1 contrast (WCAG AA passes).

Color values

HEX	#B63A3C
RGB	rgb(182, 58, 60)
HSL	hsl(359, 52%, 47%)
HSV	hsv(359, 68%, 71%)
CMYK	cmyk(0%, 68.1%, 67%, 28.6%)
CIE-LAB	lab(43.21, 50.00, 27.26)
CIE-LCH	lch(43.21, 56.95, 28.60°)
OKLab	oklab(52.97% 0.1467 0.064)
OKLCH	oklch(52.97% 0.16 23.6)
XYZ	xyz(21.6223, 13.3005, 5.7028)
Luminance	0.1330 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63A3C #3AB6B4

analogous

#B63A7A #B63A3C #B6763A

triadic

#B63A3C #3CB63A #3A3CB6

tetradic

#B63A3C #7AB63A #3AB6B4 #763AB6

square

#B63A3C #7AB63A #3AB6B4 #763AB6

split-complementary

#B63A3C #3AB676 #3A7AB6

monochromatic

#591C1D #882B2D #B63A3C #CD6162 #DB8F90

Accessibility & contrast

On white

5.74

#B63A3C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#B63A3C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63A3C

5.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63A3C	#FFFFFF	#000000	##FFFFFF
##B63A3C	1.00	5.74	3.66	5.74
#FFFFFF	5.74	1.00	21.00	1.00
#000000	3.66	21.00	1.00	21.00
##FFFFFF	5.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C553B

Deuteranopia (green-blind)

#7B7038

Tritanopia (blue-blind)

#C8183C

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b63a3c;
/* rgb */ color: rgb(182, 58, 60);
/* oklch */ color: oklch(53.0% 0.160 23.6);

Tailwind

colors: {
  custom: {
    50: '#d37871',
    500: '#b63a3c',
    950: '#000000',
  },
}

SCSS

$custom: #b63a3c;
$custom-light: #d37871;
$custom-dark: #000000;

JSON

{
  "hex": "#b63a3c",
  "rgb": {
    "r": 182,
    "g": 58,
    "b": 60
  },
  "hsl": {
    "h": 359.032,
    "s": 51.667,
    "l": 47.059
  },
  "oklch": {
    "l": 0.52974,
    "c": 0.16008,
    "h": 23.6
  },
  "luminance": 0.13297
}

Semantic roles & 50–950 ramp

primary

#B63A3C

secondary

#86C6C5

accent

#DBD94D

background

#FDF7F6

surface

#FBEEEC

border

#D4C9C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #B63A3C

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

Preview Lab → · Contrast checker → · Palette generator →