#B3373A#B3373A

#B3373A is a mid, vivid red. Relative luminance 0.126; OKLCH L 52.1% C 0.160 H 23.4°. Best body text is #FFFFFF at 5.96:1 contrast (WCAG AA passes).

Color values

HEX	#B3373A
RGB	rgb(179, 55, 58)
HSL	hsl(359, 53%, 46%)
HSV	hsv(359, 69%, 70%)
CMYK	cmyk(0%, 69.3%, 67.6%, 29.8%)
CIE-LAB	lab(42.19, 50.11, 27.09)
CIE-LCH	lch(42.19, 56.96, 28.40°)
OKLab	oklab(52.1% 0.147 0.0635)
OKLCH	oklch(52.1% 0.16 23.4)
XYZ	xyz(20.7225, 12.6246, 5.3478)
Luminance	0.1262 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3373A #37B3B0

analogous

#B33778 #B3373A #B37237

triadic

#B3373A #3AB337 #373AB3

tetradic

#B3373A #78B337 #37B3B0 #7237B3

square

#B3373A #78B337 #37B3B0 #7237B3

split-complementary

#B3373A #37B372 #3778B3

monochromatic

#551A1C #84292B #B3373A #CD5B5D #DB8A8B

Accessibility & contrast

On white

5.96

#B3373A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#B3373A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3373A

5.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3373A	#FFFFFF	#000000	##FFFFFF
##B3373A	1.00	5.96	3.52	5.96
#FFFFFF	5.96	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595339

Deuteranopia (green-blind)

#786D36

Tritanopia (blue-blind)

#C51339

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b3373a;
/* rgb */ color: rgb(179, 55, 58);
/* oklch */ color: oklch(52.1% 0.160 23.4);

Tailwind

colors: {
  custom: {
    50: '#d17670',
    500: '#b3373a',
    950: '#000000',
  },
}

SCSS

$custom: #b3373a;
$custom-light: #d17670;
$custom-dark: #000000;

JSON

{
  "hex": "#b3373a",
  "rgb": {
    "r": 179,
    "g": 55,
    "b": 58
  },
  "hsl": {
    "h": 358.548,
    "s": 52.991,
    "l": 45.882
  },
  "oklch": {
    "l": 0.521,
    "c": 0.16013,
    "h": 23.4
  },
  "luminance": 0.12622
}

Semantic roles & 50–950 ramp

primary

#B3373A

secondary

#81C5C3

accent

#DCD94B

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #B3373A

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

Preview Lab → · Contrast checker → · Palette generator →