#B33637#B33637

#B33637 is a mid, vivid red. Relative luminance 0.125; OKLCH L 51.9% C 0.161 H 24.3°. Best body text is #FFFFFF at 6.00:1 contrast (WCAG AA passes).

Color values

HEX	#B33637
RGB	rgb(179, 54, 55)
HSL	hsl(360, 54%, 46%)
HSV	hsv(360, 70%, 70%)
CMYK	cmyk(0%, 69.8%, 69.3%, 29.8%)
CIE-LAB	lab(42.00, 50.34, 28.66)
CIE-LCH	lch(42.00, 57.93, 29.66°)
OKLab	oklab(51.94% 0.1471 0.0665)
OKLCH	oklch(51.94% 0.161 24.3)
XYZ	xyz(20.6014, 12.5009, 4.9418)
Luminance	0.1250 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33637 #36B3B2

analogous

#B33675 #B33637 #B37336

triadic

#B33637 #37B336 #3637B3

tetradic

#B33637 #75B336 #36B3B2 #7336B3

square

#B33637 #75B336 #36B3B2 #7336B3

split-complementary

#B33637 #36B373 #3675B3

monochromatic

#551A1A #842829 #B33637 #CD595A #DB8889

Accessibility & contrast

On white

6.00

#B33637 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.50

#B33637 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33637

6.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33637	#FFFFFF	#000000	##FFFFFF
##B33637	1.00	6.00	3.50	6.00
#FFFFFF	6.00	1.00	21.00	1.00
#000000	3.50	21.00	1.00	21.00
##FFFFFF	6.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595236

Deuteranopia (green-blind)

#786D33

Tritanopia (blue-blind)

#C50F38

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b33637;
/* rgb */ color: rgb(179, 54, 55);
/* oklch */ color: oklch(51.9% 0.161 24.3);

Tailwind

colors: {
  custom: {
    50: '#d1756e',
    500: '#b33637',
    950: '#000000',
  },
}

SCSS

$custom: #b33637;
$custom-light: #d1756e;
$custom-dark: #000000;

JSON

{
  "hex": "#b33637",
  "rgb": {
    "r": 179,
    "g": 54,
    "b": 55
  },
  "hsl": {
    "h": 359.52,
    "s": 53.648,
    "l": 45.686
  },
  "oklch": {
    "l": 0.51943,
    "c": 0.16146,
    "h": 24.3
  },
  "luminance": 0.12498
}

Semantic roles & 50–950 ramp

primary

#B33637

secondary

#80C5C5

accent

#DDDC4B

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150907

muted

#837B7A

Preview Lab

Preview with #B33637

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

Preview Lab → · Contrast checker → · Palette generator →