#B63138#B63138

#B63138 is a mid, vivid red. Relative luminance 0.124; OKLCH L 52.0% C 0.169 H 22.7°. Best body text is #FFFFFF at 6.03:1 contrast (WCAG AA passes).

Color values

HEX	#B63138
RGB	rgb(182, 49, 56)
HSL	hsl(357, 58%, 45%)
HSV	hsv(357, 73%, 71%)
CMYK	cmyk(0%, 73.1%, 69.2%, 28.6%)
CIE-LAB	lab(41.89, 53.24, 28.06)
CIE-LCH	lch(41.89, 60.18, 27.79°)
OKLab	oklab(51.97% 0.1562 0.0652)
OKLCH	oklch(51.97% 0.169 22.7)
XYZ	xyz(21.1058, 12.4304, 5.0286)
Luminance	0.1243 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63138 #31B6AF

analogous

#B6317A #B63138 #B66C31

triadic

#B63138 #38B631 #3138B6

tetradic

#B63138 #7AB631 #31B6AF #6C31B6

square

#B63138 #7AB631 #31B6AF #6C31B6

split-complementary

#B63138 #31B66C #317AB6

monochromatic

#56171A #862429 #B63138 #D1535A #DE8488

Accessibility & contrast

On white

6.03

#B63138 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.49

#B63138 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63138

6.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63138	#FFFFFF	#000000	##FFFFFF
##B63138	1.00	6.03	3.49	6.03
#FFFFFF	6.03	1.00	21.00	1.00
#000000	3.49	21.00	1.00	21.00
##FFFFFF	6.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#575137

Deuteranopia (green-blind)

#786D34

Tritanopia (blue-blind)

#C80035

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b63138;
/* rgb */ color: rgb(182, 49, 56);
/* oklch */ color: oklch(52.0% 0.169 22.7);

Tailwind

colors: {
  custom: {
    50: '#d4736e',
    500: '#b63138',
    950: '#000000',
  },
}

SCSS

$custom: #b63138;
$custom-light: #d4736e;
$custom-dark: #000000;

JSON

{
  "hex": "#b63138",
  "rgb": {
    "r": 182,
    "g": 49,
    "b": 56
  },
  "hsl": {
    "h": 356.842,
    "s": 57.576,
    "l": 45.294
  },
  "oklch": {
    "l": 0.51969,
    "c": 0.16923,
    "h": 22.7
  },
  "luminance": 0.12427
}

Semantic roles & 50–950 ramp

primary

#B63138

secondary

#7CC7C3

accent

#E1D947

background

#FEF7F6

surface

#FCEDEC

border

#D5C8C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #B63138

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

Preview Lab → · Contrast checker → · Palette generator →