#B33531#B33531

#B33531 is a mid, vivid red. Relative luminance 0.124; OKLCH L 51.7% C 0.163 H 26.4°. Best body text is #FFFFFF at 6.05:1 contrast (WCAG AA passes).

Color values

HEX	#B33531
RGB	rgb(179, 53, 49)
HSL	hsl(2, 57%, 45%)
HSV	hsv(2, 73%, 70%)
CMYK	cmyk(0%, 70.4%, 72.6%, 29.8%)
CIE-LAB	lab(41.77, 50.44, 31.96)
CIE-LCH	lch(41.77, 59.71, 32.36°)
OKLab	oklab(51.75% 0.1462 0.0727)
OKLCH	oklch(51.75% 0.163 26.4)
XYZ	xyz(20.4202, 12.3547, 4.2146)
Luminance	0.1235 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33531 #31AFB3

analogous

#B3316E #B33531 #B37631

triadic

#B33531 #31B335 #3531B3

tetradic

#B33531 #6EB331 #31AFB3 #7631B3

square

#B33531 #6EB331 #31AFB3 #7631B3

split-complementary

#B33531 #31B376 #316EB3

monochromatic

#531917 #832724 #B33531 #D05652 #DD8482

Accessibility & contrast

On white

6.05

#B33531 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#B33531 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33531

6.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33531	#FFFFFF	#000000	##FFFFFF
##B33531	1.00	6.05	3.47	6.05
#FFFFFF	6.05	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#59512F

Deuteranopia (green-blind)

#786D2D

Tritanopia (blue-blind)

#C50835

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b33531;
/* rgb */ color: rgb(179, 53, 49);
/* oklch */ color: oklch(51.7% 0.163 26.4);

Tailwind

colors: {
  custom: {
    50: '#d27469',
    500: '#b33531',
    950: '#000000',
  },
}

SCSS

$custom: #b33531;
$custom-light: #d27469;
$custom-dark: #000000;

JSON

{
  "hex": "#b33531",
  "rgb": {
    "r": 179,
    "g": 53,
    "b": 49
  },
  "hsl": {
    "h": 1.846,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.51746,
    "c": 0.16322,
    "h": 26.4
  },
  "luminance": 0.12352
}

Semantic roles & 50–950 ramp

primary

#B33531

secondary

#7AC4C6

accent

#DCE048

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B33531

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

Preview Lab → · Contrast checker → · Palette generator →