#B1373F#B1373F

#B1373F is a mid, vivid red. Relative luminance 0.124; OKLCH L 51.8% C 0.158 H 21.0°. Best body text is #FFFFFF at 6.02:1 contrast (WCAG AA passes).

Color values

HEX	#B1373F
RGB	rgb(177, 55, 63)
HSL	hsl(356, 53%, 45%)
HSV	hsv(356, 69%, 69%)
CMYK	cmyk(0%, 68.9%, 64.4%, 30.6%)
CIE-LAB	lab(41.91, 49.74, 23.61)
CIE-LCH	lch(41.91, 55.06, 25.39°)
OKLab	oklab(51.85% 0.1471 0.0564)
OKLCH	oklch(51.85% 0.158 21)
XYZ	xyz(20.3969, 12.4413, 6.0290)
Luminance	0.1244 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1373F #37B1A9

analogous

#B1377C #B1373F #B16C37

triadic

#B1373F #3FB137 #373FB1

tetradic

#B1373F #7CB137 #37B1A9 #6C37B1

square

#B1373F #7CB137 #37B1A9 #6C37B1

split-complementary

#B1373F #37B16C #377CB1

monochromatic

#541A1E #82282E #B1373F #CC5A61 #DA888E

Accessibility & contrast

On white

6.02

#B1373F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.49

#B1373F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B1373F

6.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1373F	#FFFFFF	#000000	##FFFFFF
##B1373F	1.00	6.02	3.49	6.02
#FFFFFF	6.02	1.00	21.00	1.00
#000000	3.49	21.00	1.00	21.00
##FFFFFF	6.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#58523E

Deuteranopia (green-blind)

#776C3C

Tritanopia (blue-blind)

#C2173B

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b1373f;
/* rgb */ color: rgb(177, 55, 63);
/* oklch */ color: oklch(51.8% 0.158 21.0);

Tailwind

colors: {
  custom: {
    50: '#cf7674',
    500: '#b1373f',
    950: '#000000',
  },
}

SCSS

$custom: #b1373f;
$custom-light: #cf7674;
$custom-dark: #000000;

JSON

{
  "hex": "#b1373f",
  "rgb": {
    "r": 177,
    "g": 55,
    "b": 63
  },
  "hsl": {
    "h": 356.066,
    "s": 52.586,
    "l": 45.49
  },
  "oklch": {
    "l": 0.51847,
    "c": 0.15755,
    "h": 21
  },
  "luminance": 0.12438
}

Semantic roles & 50–950 ramp

primary

#B1373F

secondary

#80C4C0

accent

#DCD34C

background

#FDF7F7

surface

#FBEDED

border

#D4C8C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B1373F

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

Preview Lab → · Contrast checker → · Palette generator →