#B33143#B33143

#B33143 is a mid, vivid red. Relative luminance 0.122; OKLCH L 51.6% C 0.166 H 17.6°. Best body text is #FFFFFF at 6.11:1 contrast (WCAG AA passes).

Color values

HEX	#B33143
RGB	rgb(179, 49, 67)
HSL	hsl(352, 57%, 45%)
HSV	hsv(352, 73%, 70%)
CMYK	cmyk(0%, 72.6%, 62.6%, 29.8%)
CIE-LAB	lab(41.51, 52.94, 20.71)
CIE-LCH	lch(41.51, 56.85, 21.37°)
OKLab	oklab(51.65% 0.1578 0.0501)
OKLCH	oklch(51.65% 0.166 17.6)
XYZ	xyz(20.7040, 12.1886, 6.5715)
Luminance	0.1219 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33143 #31B3A1

analogous

#B33184 #B33143 #B36031

triadic

#B33143 #43B331 #3143B3

tetradic

#B33143 #84B331 #31B3A1 #6031B3

square

#B33143 #84B331 #31B3A1 #6031B3

split-complementary

#B33143 #31B360 #3184B3

monochromatic

#53171F #832431 #B33143 #D05263 #DD828E

Accessibility & contrast

On white

6.11

#B33143 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.44

#B33143 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33143

6.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33143	#FFFFFF	#000000	##FFFFFF
##B33143	1.00	6.11	3.44	6.11
#FFFFFF	6.11	1.00	21.00	1.00
#000000	3.44	21.00	1.00	21.00
##FFFFFF	6.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#545143

Deuteranopia (green-blind)

#756C3F

Tritanopia (blue-blind)

#C40539

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b33143;
/* rgb */ color: rgb(179, 49, 67);
/* oklch */ color: oklch(51.6% 0.166 17.6);

Tailwind

colors: {
  custom: {
    50: '#d17377',
    500: '#b33143',
    950: '#000000',
  },
}

SCSS

$custom: #b33143;
$custom-light: #d17377;
$custom-dark: #000000;

JSON

{
  "hex": "#b33143",
  "rgb": {
    "r": 179,
    "g": 49,
    "b": 67
  },
  "hsl": {
    "h": 351.692,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.51645,
    "c": 0.1656,
    "h": 17.6
  },
  "luminance": 0.12186
}

Semantic roles & 50–950 ramp

primary

#B33143

secondary

#7AC6BB

accent

#E0CB48

background

#FDF7F7

surface

#FBEDED

border

#D4C8C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B33143

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

Preview Lab → · Contrast checker → · Palette generator →