#B33730#B33730

#B33730 is a mid, vivid red. Relative luminance 0.125; OKLCH L 51.9% C 0.161 H 27.4°. Best body text is #FFFFFF at 5.99:1 contrast (WCAG AA passes).

Color values

HEX	#B33730
RGB	rgb(179, 55, 48)
HSL	hsl(3, 58%, 45%)
HSV	hsv(3, 73%, 70%)
CMYK	cmyk(0%, 69.3%, 73.2%, 29.8%)
CIE-LAB	lab(42.05, 49.60, 32.86)
CIE-LCH	lch(42.05, 59.50, 33.52°)
OKLab	oklab(51.95% 0.1433 0.0744)
OKLCH	oklch(51.95% 0.161 27.4)
XYZ	xyz(20.4924, 12.5325, 4.1357)
Luminance	0.1253 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33730 #30ACB3

analogous

#B3306B #B33730 #B37930

triadic

#B33730 #30B337 #3730B3

tetradic

#B33730 #6BB330 #30ACB3 #7930B3

square

#B33730 #6BB330 #30ACB3 #7930B3

split-complementary

#B33730 #30B379 #306BB3

monochromatic

#521916 #832823 #B33730 #D05750 #DD8580

Accessibility & contrast

On white

5.99

#B33730 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#B33730 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33730

5.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33730	#FFFFFF	#000000	##FFFFFF
##B33730	1.00	5.99	3.51	5.99
#FFFFFF	5.99	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A522E

Deuteranopia (green-blind)

#796D2C

Tritanopia (blue-blind)

#C50E36

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b33730;
/* rgb */ color: rgb(179, 55, 48);
/* oklch */ color: oklch(51.9% 0.161 27.4);

Tailwind

colors: {
  custom: {
    50: '#d27569',
    500: '#b33730',
    950: '#000000',
  },
}

SCSS

$custom: #b33730;
$custom-light: #d27569;
$custom-dark: #000000;

JSON

{
  "hex": "#b33730",
  "rgb": {
    "r": 179,
    "g": 55,
    "b": 48
  },
  "hsl": {
    "h": 3.206,
    "s": 57.709,
    "l": 44.51
  },
  "oklch": {
    "l": 0.51948,
    "c": 0.16148,
    "h": 27.4
  },
  "luminance": 0.12529
}

Semantic roles & 50–950 ramp

primary

#B33730

secondary

#79C2C6

accent

#D9E147

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B33730

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

Preview Lab → · Contrast checker → · Palette generator →