#B03837#B03837

#B03837 is a mid, vivid red. Relative luminance 0.123; OKLCH L 51.7% C 0.156 H 24.9°. Best body text is #FFFFFF at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#B03837
RGB	rgb(176, 56, 55)
HSL	hsl(0, 52%, 45%)
HSV	hsv(0, 69%, 69%)
CMYK	cmyk(0%, 68.2%, 68.8%, 31%)
CIE-LAB	lab(41.75, 48.54, 28.23)
CIE-LCH	lch(41.75, 56.15, 30.18°)
OKLab	oklab(51.65% 0.1418 0.0657)
OKLCH	oklch(51.65% 0.156 24.9)
XYZ	xyz(20.0104, 12.3372, 4.9413)
Luminance	0.1233 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03837 #37AFB0

analogous

#B03772 #B03837 #B07437

triadic

#B03837 #37B038 #3837B0

tetradic

#B03837 #72B037 #37AFB0 #7437B0

square

#B03837 #72B037 #37AFB0 #7437B0

split-complementary

#B03837 #37B074 #3772B0

monochromatic

#531A1A #812928 #B03837 #CB5A59 #DA8888

Accessibility & contrast

On white

6.06

#B03837 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#B03837 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03837

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03837	#FFFFFF	#000000	##FFFFFF
##B03837	1.00	6.06	3.47	6.06
#FFFFFF	6.06	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595236

Deuteranopia (green-blind)

#776C33

Tritanopia (blue-blind)

#C11739

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b03837;
/* rgb */ color: rgb(176, 56, 55);
/* oklch */ color: oklch(51.7% 0.156 24.9);

Tailwind

colors: {
  custom: {
    50: '#cf766e',
    500: '#b03837',
    950: '#000000',
  },
}

SCSS

$custom: #b03837;
$custom-light: #cf766e;
$custom-dark: #000000;

JSON

{
  "hex": "#b03837",
  "rgb": {
    "r": 176,
    "g": 56,
    "b": 55
  },
  "hsl": {
    "h": 0.496,
    "s": 52.381,
    "l": 45.294
  },
  "oklch": {
    "l": 0.51651,
    "c": 0.15627,
    "h": 24.9
  },
  "luminance": 0.12334
}

Semantic roles & 50–950 ramp

primary

#B03837

secondary

#7FC3C4

accent

#DBDC4C

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150907

muted

#837B7A

Preview Lab

Preview with #B03837

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

Preview Lab → · Contrast checker → · Palette generator →