#B33331#B33331

#B33331 is a mid, vivid red. Relative luminance 0.122; OKLCH L 51.5% C 0.165 H 25.8°. Best body text is #FFFFFF at 6.11:1 contrast (WCAG AA passes).

Color values

HEX	#B33331
RGB	rgb(179, 51, 49)
HSL	hsl(1, 57%, 45%)
HSV	hsv(1, 73%, 70%)
CMYK	cmyk(0%, 71.5%, 72.6%, 29.8%)
CIE-LAB	lab(41.49, 51.20, 31.63)
CIE-LCH	lch(41.49, 60.19, 31.71°)
OKLab	oklab(51.54% 0.1486 0.072)
OKLCH	oklch(51.54% 0.165 25.8)
XYZ	xyz(20.3309, 12.1762, 4.1848)
Luminance	0.1217 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33331 #31B1B3

analogous

#B33170 #B33331 #B37431

triadic

#B33331 #31B333 #3331B3

tetradic

#B33331 #70B331 #31B1B3 #7431B3

square

#B33331 #70B331 #31B1B3 #7431B3

split-complementary

#B33331 #31B374 #3170B3

monochromatic

#531817 #832524 #B33331 #D05452 #DD8382

Accessibility & contrast

On white

6.11

#B33331 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#B33331 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33331

6.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33331	#FFFFFF	#000000	##FFFFFF
##B33331	1.00	6.11	3.43	6.11
#FFFFFF	6.11	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#58502F

Deuteranopia (green-blind)

#786C2D

Tritanopia (blue-blind)

#C50034

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b33331;
/* rgb */ color: rgb(179, 51, 49);
/* oklch */ color: oklch(51.5% 0.165 25.8);

Tailwind

colors: {
  custom: {
    50: '#d27469',
    500: '#b33331',
    950: '#000000',
  },
}

SCSS

$custom: #b33331;
$custom-light: #d27469;
$custom-dark: #000000;

JSON

{
  "hex": "#b33331",
  "rgb": {
    "r": 179,
    "g": 51,
    "b": 49
  },
  "hsl": {
    "h": 0.923,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.51537,
    "c": 0.16508,
    "h": 25.8
  },
  "luminance": 0.12173
}

Semantic roles & 50–950 ramp

primary

#B33331

secondary

#7AC5C6

accent

#DEE048

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B33331

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

Preview Lab → · Contrast checker → · Palette generator →