#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
RGBrgb(182, 49, 55)
HSLhsl(357, 58%, 45%)
HSVhsv(357, 73%, 71%)
CMYKcmyk(0%, 73.1%, 69.8%, 28.6%)
CIE-LABlab(41.88, 53.19, 28.64)
CIE-LCHlch(41.88, 60.41, 28.30°)
OKLaboklab(51.95% 0.1558 0.0664)
OKLCHoklch(51.95% 0.169 23.1)
XYZxyz(21.0816, 12.4207, 4.9011)
Luminance0.1242 (WCAG relative)
Temperaturewarm
Familyred

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
##B631371.006.033.486.03
#FFFFFF6.031.0021.001.00
#0000003.4821.001.0021.00
##FFFFFF6.031.0021.001.00

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 →

#B63137 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva