#B13738#B13738

#B13738 is a mid, vivid red. Relative luminance 0.124; OKLCH L 51.7% C 0.158 H 24.1°. Best body text is #FFFFFF at 6.05:1 contrast (WCAG AA passes).

Color values

HEX	#B13738
RGB	rgb(177, 55, 56)
HSL	hsl(360, 53%, 45%)
HSV	hsv(360, 69%, 69%)
CMYK	cmyk(0%, 68.9%, 68.4%, 30.6%)
CIE-LAB	lab(41.80, 49.33, 27.72)
CIE-LCH	lch(41.80, 56.59, 29.34°)
OKLab	oklab(51.73% 0.1444 0.0647)
OKLCH	oklch(51.73% 0.158 24.1)
XYZ	xyz(20.2136, 12.3679, 5.0635)
Luminance	0.1236 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B13738 #37B1B0

analogous

#B13775 #B13738 #B17337

triadic

#B13738 #38B137 #3738B1

tetradic

#B13738 #75B137 #37B1B0 #7337B1

square

#B13738 #75B137 #37B1B0 #7337B1

split-complementary

#B13738 #37B173 #3775B1

monochromatic

#541A1A #822829 #B13738 #CC5A5B #DA8889

Accessibility & contrast

On white

6.05

#B13738 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#B13738 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B13738

6.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B13738	#FFFFFF	#000000	##FFFFFF
##B13738	1.00	6.05	3.47	6.05
#FFFFFF	6.05	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595237

Deuteranopia (green-blind)

#776C34

Tritanopia (blue-blind)

#C21439

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b13738;
/* rgb */ color: rgb(177, 55, 56);
/* oklch */ color: oklch(51.7% 0.158 24.1);

Tailwind

colors: {
  custom: {
    50: '#d0756e',
    500: '#b13738',
    950: '#000000',
  },
}

SCSS

$custom: #b13738;
$custom-light: #d0756e;
$custom-dark: #000000;

JSON

{
  "hex": "#b13738",
  "rgb": {
    "r": 177,
    "g": 55,
    "b": 56
  },
  "hsl": {
    "h": 359.508,
    "s": 52.586,
    "l": 45.49
  },
  "oklch": {
    "l": 0.51726,
    "c": 0.15822,
    "h": 24.1
  },
  "luminance": 0.12365
}

Semantic roles & 50–950 ramp

primary

#B13738

secondary

#80C4C4

accent

#DCDB4C

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #B13738

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

Preview Lab → · Contrast checker → · Palette generator →