#B33037#B33037

#B33037 is a mid, vivid red. Relative luminance 0.120; OKLCH L 51.3% C 0.167 H 22.6°. Best body text is #FFFFFF at 6.19:1 contrast (WCAG AA passes).

Color values

HEX	#B33037
RGB	rgb(179, 48, 55)
HSL	hsl(357, 58%, 45%)
HSV	hsv(357, 73%, 70%)
CMYK	cmyk(0%, 73.2%, 69.3%, 29.8%)
CIE-LAB	lab(41.18, 52.61, 27.67)
CIE-LCH	lch(41.18, 59.44, 27.74°)
OKLab	oklab(51.33% 0.1543 0.0643)
OKLCH	oklch(51.33% 0.167 22.6)
XYZ	xyz(20.3392, 11.9765, 4.8544)
Luminance	0.1197 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33037 #30B3AC

analogous

#B33079 #B33037 #B36B30

triadic

#B33037 #37B330 #3037B3

tetradic

#B33037 #79B330 #30B3AC #6B30B3

square

#B33037 #79B330 #30B3AC #6B30B3

split-complementary

#B33037 #30B36B #3079B3

monochromatic

#521619 #832328 #B33037 #D05057 #DD8085

Accessibility & contrast

On white

6.19

#B33037 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.39

#B33037 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33037

6.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33037	#FFFFFF	#000000	##FFFFFF
##B33037	1.00	6.19	3.39	6.19
#FFFFFF	6.19	1.00	21.00	1.00
#000000	3.39	21.00	1.00	21.00
##FFFFFF	6.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#554F36

Deuteranopia (green-blind)

#766B33

Tritanopia (blue-blind)

#C50034

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b33037;
/* rgb */ color: rgb(179, 48, 55);
/* oklch */ color: oklch(51.3% 0.167 22.6);

Tailwind

colors: {
  custom: {
    50: '#d2726e',
    500: '#b33037',
    950: '#000000',
  },
}

SCSS

$custom: #b33037;
$custom-light: #d2726e;
$custom-dark: #000000;

JSON

{
  "hex": "#b33037",
  "rgb": {
    "r": 179,
    "g": 48,
    "b": 55
  },
  "hsl": {
    "h": 356.794,
    "s": 57.709,
    "l": 44.51
  },
  "oklch": {
    "l": 0.51329,
    "c": 0.16718,
    "h": 22.6
  },
  "luminance": 0.11973
}

Semantic roles & 50–950 ramp

primary

#B33037

secondary

#79C6C2

accent

#E1D947

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150907

muted

#837B7A

Preview Lab

Preview with #B33037

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

Preview Lab → · Contrast checker → · Palette generator →