#B03133#B03133

#B03133 is a mid, vivid red. Relative luminance 0.117; OKLCH L 50.8% C 0.164 H 24.4°. Best body text is #FFFFFF at 6.30:1 contrast (WCAG AA passes).

Color values

HEX	#B03133
RGB	rgb(176, 49, 51)
HSL	hsl(359, 56%, 44%)
HSV	hsv(359, 72%, 69%)
CMYK	cmyk(0%, 72.2%, 71%, 31%)
CIE-LAB	lab(40.68, 51.08, 29.35)
CIE-LCH	lch(40.68, 58.91, 29.88°)
OKLab	oklab(50.84% 0.149 0.0675)
OKLCH	oklch(50.84% 0.164 24.4)
XYZ	xyz(19.6025, 11.6687, 4.3514)
Luminance	0.1167 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03133 #31B0AE

analogous

#B03173 #B03133 #B06F31

triadic

#B03133 #33B031 #3133B0

tetradic

#B03133 #73B031 #31B0AE #6F31B0

square

#B03133 #73B031 #31B0AE #6F31B0

split-complementary

#B03133 #31B06F #3173B0

monochromatic

#501617 #802425 #B03133 #CE5052 #DC8081

Accessibility & contrast

On white

6.30

#B03133 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#B03133 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03133

6.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03133	#FFFFFF	#000000	##FFFFFF
##B03133	1.00	6.30	3.33	6.30
#FFFFFF	6.30	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#554E32

Deuteranopia (green-blind)

#756A2F

Tritanopia (blue-blind)

#C20033

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #b03133;
/* rgb */ color: rgb(176, 49, 51);
/* oklch */ color: oklch(50.8% 0.164 24.4);

Tailwind

colors: {
  custom: {
    50: '#cf726b',
    500: '#b03133',
    950: '#000000',
  },
}

SCSS

$custom: #b03133;
$custom-light: #cf726b;
$custom-dark: #000000;

JSON

{
  "hex": "#b03133",
  "rgb": {
    "r": 176,
    "g": 49,
    "b": 51
  },
  "hsl": {
    "h": 359.055,
    "s": 56.444,
    "l": 44.118
  },
  "oklch": {
    "l": 0.50838,
    "c": 0.16358,
    "h": 24.4
  },
  "luminance": 0.11666
}

Semantic roles & 50–950 ramp

primary

#B03133

secondary

#78C5C3

accent

#E0DD48

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150806

muted

#837B7A

Preview Lab

Preview with #B03133

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

Preview Lab → · Contrast checker → · Palette generator →