#B3373F#B3373F

#B3373F is a mid, vivid red. Relative luminance 0.127; OKLCH L 52.2% C 0.160 H 21.1°. Best body text is #FFFFFF at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#B3373F
RGB	rgb(179, 55, 63)
HSL	hsl(356, 53%, 46%)
HSV	hsv(356, 69%, 70%)
CMYK	cmyk(0%, 69.3%, 64.8%, 29.8%)
CIE-LAB	lab(42.27, 50.40, 24.15)
CIE-LCH	lch(42.27, 55.89, 25.60°)
OKLab	oklab(52.19% 0.149 0.0575)
OKLCH	oklch(52.19% 0.16 21.1)
XYZ	xyz(20.8559, 12.6779, 6.0505)
Luminance	0.1268 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3373F #37B3AB

analogous

#B3377D #B3373F #B36D37

triadic

#B3373F #3FB337 #373FB3

tetradic

#B3373F #7DB337 #37B3AB #6D37B3

square

#B3373F #7DB337 #37B3AB #6D37B3

split-complementary

#B3373F #37B36D #377DB3

monochromatic

#551A1E #84292F #B3373F #CD5B62 #DB8A8F

Accessibility & contrast

On white

5.94

#B3373F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#B3373F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3373F

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3373F	#FFFFFF	#000000	##FFFFFF
##B3373F	1.00	5.94	3.54	5.94
#FFFFFF	5.94	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#58533E

Deuteranopia (green-blind)

#786D3C

Tritanopia (blue-blind)

#C4153B

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b3373f;
/* rgb */ color: rgb(179, 55, 63);
/* oklch */ color: oklch(52.2% 0.160 21.1);

Tailwind

colors: {
  custom: {
    50: '#d17674',
    500: '#b3373f',
    950: '#000000',
  },
}

SCSS

$custom: #b3373f;
$custom-light: #d17674;
$custom-dark: #000000;

JSON

{
  "hex": "#b3373f",
  "rgb": {
    "r": 179,
    "g": 55,
    "b": 63
  },
  "hsl": {
    "h": 356.129,
    "s": 52.991,
    "l": 45.882
  },
  "oklch": {
    "l": 0.52187,
    "c": 0.15967,
    "h": 21.1
  },
  "luminance": 0.12675
}

Semantic roles & 50–950 ramp

primary

#B3373F

secondary

#81C5C1

accent

#DCD34B

background

#FDF7F7

surface

#FBEDED

border

#D4C8C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B3373F

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

Preview Lab → · Contrast checker → · Palette generator →