#B1372A#B1372A

#B1372A is a mid, vivid red. Relative luminance 0.122; OKLCH L 51.5% C 0.160 H 29.7°. Best body text is #FFFFFF at 6.09:1 contrast (WCAG AA passes).

Color values

HEX	#B1372A
RGB	rgb(177, 55, 42)
HSL	hsl(6, 62%, 43%)
HSV	hsv(6, 76%, 69%)
CMYK	cmyk(0%, 68.9%, 76.3%, 30.6%)
CIE-LAB	lab(41.61, 48.67, 35.70)
CIE-LCH	lch(41.61, 60.36, 36.26°)
OKLab	oklab(51.53% 0.1394 0.0793)
OKLCH	oklch(51.53% 0.16 29.7)
XYZ	xyz(19.9178, 12.2496, 3.5057)
Luminance	0.1225 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1372A #2AA4B1

analogous

#B12A60 #B1372A #B17B2A

triadic

#B1372A #2AB137 #372AB1

tetradic

#B1372A #60B12A #2AA4B1 #7B2AB1

square

#B1372A #60B12A #2AA4B1 #7B2AB1

split-complementary

#B1372A #2AB17B #2A60B1

monochromatic

#4E1813 #80281E #B1372A #D35345 #DF8177

Accessibility & contrast

On white

6.09

#B1372A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.45

#B1372A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B1372A

6.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1372A	#FFFFFF	#000000	##FFFFFF
##B1372A	1.00	6.09	3.45	6.09
#FFFFFF	6.09	1.00	21.00	1.00
#000000	3.45	21.00	1.00	21.00
##FFFFFF	6.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5128

Deuteranopia (green-blind)

#786C25

Tritanopia (blue-blind)

#C30E35

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b1372a;
/* rgb */ color: rgb(177, 55, 42);
/* oklch */ color: oklch(51.5% 0.160 29.7);

Tailwind

colors: {
  custom: {
    50: '#d17564',
    500: '#b1372a',
    950: '#000000',
  },
}

SCSS

$custom: #b1372a;
$custom-light: #d17564;
$custom-dark: #000000;

JSON

{
  "hex": "#b1372a",
  "rgb": {
    "r": 177,
    "g": 55,
    "b": 42
  },
  "hsl": {
    "h": 5.778,
    "s": 61.644,
    "l": 42.941
  },
  "oklch": {
    "l": 0.51528,
    "c": 0.16036,
    "h": 29.7
  },
  "luminance": 0.12247
}

Semantic roles & 50–950 ramp

primary

#B1372A

secondary

#70BEC6

accent

#D5E543

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#160905

muted

#847B7A

Preview Lab

Preview with #B1372A

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

Preview Lab → · Contrast checker → · Palette generator →