#B33B3E#B33B3E

#B33B3E is a mid, vivid red. Relative luminance 0.131; OKLCH L 52.6% C 0.156 H 22.9°. Best body text is #FFFFFF at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#B33B3E
RGB	rgb(179, 59, 62)
HSL	hsl(359, 50%, 47%)
HSV	hsv(359, 67%, 70%)
CMYK	cmyk(0%, 67%, 65.4%, 29.8%)
CIE-LAB	lab(42.86, 48.70, 25.49)
CIE-LCH	lch(42.86, 54.97, 27.63°)
OKLab	oklab(52.62% 0.1434 0.0605)
OKLCH	oklch(52.62% 0.156 22.9)
XYZ	xyz(21.0260, 13.0624, 5.9706)
Luminance	0.1306 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33B3E #3BB3B0

analogous

#B33B7A #B33B3E #B3743B

triadic

#B33B3E #3EB33B #3B3EB3

tetradic

#B33B3E #7AB33B #3BB3B0 #743BB3

square

#B33B3E #7AB33B #3BB3B0 #743BB3

split-complementary

#B33B3E #3BB374 #3B7AB3

monochromatic

#571D1E #852C2E #B33B3E #CB6063 #DA8E90

Accessibility & contrast

On white

5.81

#B33B3E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#B33B3E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33B3E

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33B3E	#FFFFFF	#000000	##FFFFFF
##B33B3E	1.00	5.81	3.61	5.81
#FFFFFF	5.81	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B553D

Deuteranopia (green-blind)

#796F3B

Tritanopia (blue-blind)

#C41D3D

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b33b3e;
/* rgb */ color: rgb(179, 59, 62);
/* oklch */ color: oklch(52.6% 0.156 22.9);

Tailwind

colors: {
  custom: {
    50: '#d17873',
    500: '#b33b3e',
    950: '#000000',
  },
}

SCSS

$custom: #b33b3e;
$custom-light: #d17873;
$custom-dark: #000000;

JSON

{
  "hex": "#b33b3e",
  "rgb": {
    "r": 179,
    "g": 59,
    "b": 62
  },
  "hsl": {
    "h": 358.5,
    "s": 50.42,
    "l": 46.667
  },
  "oklch": {
    "l": 0.52618,
    "c": 0.15559,
    "h": 22.9
  },
  "luminance": 0.13059
}

Semantic roles & 50–950 ramp

primary

#B33B3E

secondary

#85C5C3

accent

#DAD64E

background

#FDF7F6

surface

#FBEEEC

border

#D4C9C7

text

#150908

muted

#837B7B

Preview Lab

Preview with #B33B3E

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

Preview Lab → · Contrast checker → · Palette generator →