#B33437#B33437

#B33437 is a mid, vivid red. Relative luminance 0.123; OKLCH L 51.7% C 0.163 H 23.7°. Best body text is #FFFFFF at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#B33437
RGB	rgb(179, 52, 55)
HSL	hsl(359, 55%, 45%)
HSV	hsv(359, 71%, 70%)
CMYK	cmyk(0%, 70.9%, 69.3%, 29.8%)
CIE-LAB	lab(41.72, 51.12, 28.32)
CIE-LCH	lch(41.72, 58.44, 28.99°)
OKLab	oklab(51.73% 0.1496 0.0658)
OKLCH	oklch(51.73% 0.163 23.7)
XYZ	xyz(20.5102, 12.3186, 4.9114)
Luminance	0.1232 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33437 #34B3B0

analogous

#B33476 #B33437 #B37134

triadic

#B33437 #37B334 #3437B3

tetradic

#B33437 #76B334 #34B3B0 #7134B3

square

#B33437 #76B334 #34B3B0 #7134B3

split-complementary

#B33437 #34B371 #3476B3

monochromatic

#54181A #842628 #B33437 #CE5659 #DC8688

Accessibility & contrast

On white

6.06

#B33437 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.46

#B33437 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33437

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33437	#FFFFFF	#000000	##FFFFFF
##B33437	1.00	6.06	3.46	6.06
#FFFFFF	6.06	1.00	21.00	1.00
#000000	3.46	21.00	1.00	21.00
##FFFFFF	6.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585136

Deuteranopia (green-blind)

#786C33

Tritanopia (blue-blind)

#C50736

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b33437;
/* rgb */ color: rgb(179, 52, 55);
/* oklch */ color: oklch(51.7% 0.163 23.7);

Tailwind

colors: {
  custom: {
    50: '#d1746e',
    500: '#b33437',
    950: '#000000',
  },
}

SCSS

$custom: #b33437;
$custom-light: #d1746e;
$custom-dark: #000000;

JSON

{
  "hex": "#b33437",
  "rgb": {
    "r": 179,
    "g": 52,
    "b": 55
  },
  "hsl": {
    "h": 358.583,
    "s": 54.978,
    "l": 45.294
  },
  "oklch": {
    "l": 0.51731,
    "c": 0.1634,
    "h": 23.7
  },
  "luminance": 0.12316
}

Semantic roles & 50–950 ramp

primary

#B33437

secondary

#7DC5C4

accent

#DEDB49

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150907

muted

#837B7A

Preview Lab

Preview with #B33437

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

Preview Lab → · Contrast checker → · Palette generator →