#B33740#B33740

#B33740 is a mid, vivid red. Relative luminance 0.127; OKLCH L 52.2% C 0.160 H 20.7°. Best body text is #FFFFFF at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#B33740
RGB	rgb(179, 55, 64)
HSL	hsl(356, 53%, 46%)
HSV	hsv(356, 69%, 70%)
CMYK	cmyk(0%, 69.3%, 64.2%, 29.8%)
CIE-LAB	lab(42.29, 50.46, 23.56)
CIE-LCH	lch(42.29, 55.69, 25.03°)
OKLab	oklab(52.21% 0.1493 0.0563)
OKLCH	oklch(52.21% 0.16 20.7)
XYZ	xyz(20.8841, 12.6892, 6.1991)
Luminance	0.1269 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33740 #37B3AA

analogous

#B3377E #B33740 #B36C37

triadic

#B33740 #40B337 #3740B3

tetradic

#B33740 #7EB337 #37B3AA #6C37B3

square

#B33740 #7EB337 #37B3AA #6C37B3

split-complementary

#B33740 #37B36C #377EB3

monochromatic

#551A1F #84292F #B33740 #CD5B63 #DB8A8F

Accessibility & contrast

On white

5.94

#B33740 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#B33740 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33740

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33740	#FFFFFF	#000000	##FFFFFF
##B33740	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)

#58533F

Deuteranopia (green-blind)

#786D3D

Tritanopia (blue-blind)

#C4163B

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b33740;
/* rgb */ color: rgb(179, 55, 64);
/* oklch */ color: oklch(52.2% 0.160 20.7);

Tailwind

colors: {
  custom: {
    50: '#d17674',
    500: '#b33740',
    950: '#000000',
  },
}

SCSS

$custom: #b33740;
$custom-light: #d17674;
$custom-dark: #000000;

JSON

{
  "hex": "#b33740",
  "rgb": {
    "r": 179,
    "g": 55,
    "b": 64
  },
  "hsl": {
    "h": 355.645,
    "s": 52.991,
    "l": 45.882
  },
  "oklch": {
    "l": 0.52206,
    "c": 0.1596,
    "h": 20.7
  },
  "luminance": 0.12686
}

Semantic roles & 50–950 ramp

primary

#B33740

secondary

#81C5C0

accent

#DCD24B

background

#FDF7F7

surface

#FBEDED

border

#D4C8C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B33740

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

Preview Lab → · Contrast checker → · Palette generator →