#B63137#B63137

#B63137 is a mid, vivid red. Relative luminance 0.124; OKLCH L 52.0% C 0.169 H 23.1°. Best body text is #FFFFFF at 6.03:1 contrast (WCAG AA passes).

Color values

HEX	#B63137
RGB	rgb(182, 49, 55)
HSL	hsl(357, 58%, 45%)
HSV	hsv(357, 73%, 71%)
CMYK	cmyk(0%, 73.1%, 69.8%, 28.6%)
CIE-LAB	lab(41.88, 53.19, 28.64)
CIE-LCH	lch(41.88, 60.41, 28.30°)
OKLab	oklab(51.95% 0.1558 0.0664)
OKLCH	oklch(51.95% 0.169 23.1)
XYZ	xyz(21.0816, 12.4207, 4.9011)
Luminance	0.1242 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63137 #31B6B0

analogous

#B6317A #B63137 #B66D31

triadic

#B63137 #37B631 #3137B6

tetradic

#B63137 #7AB631 #31B6B0 #6D31B6

square

#B63137 #7AB631 #31B6B0 #6D31B6

split-complementary

#B63137 #31B66D #317AB6

monochromatic

#56171A #862428 #B63137 #D15359 #DE8488

Accessibility & contrast

On white

6.03

#B63137 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#B63137 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63137

6.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63137	#FFFFFF	#000000	##FFFFFF
##B63137	1.00	6.03	3.48	6.03
#FFFFFF	6.03	1.00	21.00	1.00
#000000	3.48	21.00	1.00	21.00
##FFFFFF	6.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#575136

Deuteranopia (green-blind)

#796D33

Tritanopia (blue-blind)

#C80035

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b63137;
/* rgb */ color: rgb(182, 49, 55);
/* oklch */ color: oklch(52.0% 0.169 23.1);

Tailwind

colors: {
  custom: {
    50: '#d4736e',
    500: '#b63137',
    950: '#000000',
  },
}

SCSS

$custom: #b63137;
$custom-light: #d4736e;
$custom-dark: #000000;

JSON

{
  "hex": "#b63137",
  "rgb": {
    "r": 182,
    "g": 49,
    "b": 55
  },
  "hsl": {
    "h": 357.293,
    "s": 57.576,
    "l": 45.294
  },
  "oklch": {
    "l": 0.51953,
    "c": 0.16933,
    "h": 23.1
  },
  "luminance": 0.12418
}

Semantic roles & 50–950 ramp

primary

#B63137

secondary

#7CC7C4

accent

#E1DA47

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #B63137

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

Preview Lab → · Contrast checker → · Palette generator →