#B63A3D#B63A3D

#B63A3D is a mid, vivid red. Relative luminance 0.133; OKLCH L 53.0% C 0.160 H 23.1°. Best body text is #FFFFFF at 5.74:1 contrast (WCAG AA passes).

Color values

HEX	#B63A3D
RGB	rgb(182, 58, 61)
HSL	hsl(359, 52%, 47%)
HSV	hsv(359, 68%, 71%)
CMYK	cmyk(0%, 68.1%, 66.5%, 28.6%)
CIE-LAB	lab(43.23, 50.06, 26.68)
CIE-LCH	lch(43.23, 56.72, 28.06°)
OKLab	oklab(52.99% 0.1471 0.0629)
OKLCH	oklch(52.99% 0.16 23.1)
XYZ	xyz(21.6490, 13.3112, 5.8433)
Luminance	0.1331 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63A3D #3AB6B3

analogous

#B63A7B #B63A3D #B6753A

triadic

#B63A3D #3DB63A #3A3DB6

tetradic

#B63A3D #7BB63A #3AB6B3 #753AB6

square

#B63A3D #7BB63A #3AB6B3 #753AB6

split-complementary

#B63A3D #3AB675 #3A7BB6

monochromatic

#591C1E #882B2D #B63A3D #CD6163 #DB8F91

Accessibility & contrast

On white

5.74

#B63A3D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#B63A3D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63A3D

5.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63A3D	#FFFFFF	#000000	##FFFFFF
##B63A3D	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)

#5C553C

Deuteranopia (green-blind)

#7B7039

Tritanopia (blue-blind)

#C8193C

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b63a3d;
/* rgb */ color: rgb(182, 58, 61);
/* oklch */ color: oklch(53.0% 0.160 23.1);

Tailwind

colors: {
  custom: {
    50: '#d37872',
    500: '#b63a3d',
    950: '#000000',
  },
}

SCSS

$custom: #b63a3d;
$custom-light: #d37872;
$custom-dark: #000000;

JSON

{
  "hex": "#b63a3d",
  "rgb": {
    "r": 182,
    "g": 58,
    "b": 61
  },
  "hsl": {
    "h": 358.548,
    "s": 51.667,
    "l": 47.059
  },
  "oklch": {
    "l": 0.52991,
    "c": 0.15996,
    "h": 23.1
  },
  "luminance": 0.13308
}

Semantic roles & 50–950 ramp

primary

#B63A3D

secondary

#86C6C5

accent

#DBD84D

background

#FDF7F6

surface

#FBEEEC

border

#D4C9C7

text

#150908

muted

#837B7B

Preview Lab

Preview with #B63A3D

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

Preview Lab → · Contrast checker → · Palette generator →