#B03431#B03431

#B03431 is a mid, vivid red. Relative luminance 0.119; OKLCH L 51.1% C 0.161 H 26.1°. Best body text is #FFFFFF at 6.21:1 contrast (WCAG AA passes).

Color values

HEX	#B03431
RGB	rgb(176, 52, 49)
HSL	hsl(1, 56%, 44%)
HSV	hsv(1, 72%, 69%)
CMYK	cmyk(0%, 70.5%, 72.2%, 31%)
CIE-LAB	lab(41.07, 49.84, 31.00)
CIE-LCH	lch(41.07, 58.69, 31.88°)
OKLab	oklab(51.12% 0.1446 0.0708)
OKLCH	oklch(51.12% 0.161 26.1)
XYZ	xyz(19.6890, 11.9108, 4.1674)
Luminance	0.1191 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03431 #31ADB0

analogous

#B0316E #B03431 #B07431

triadic

#B03431 #31B034 #3431B0

tetradic

#B03431 #6EB031 #31ADB0 #7431B0

square

#B03431 #6EB031 #31ADB0 #7431B0

split-complementary

#B03431 #31B074 #316EB0

monochromatic

#501816 #802624 #B03431 #CE5350 #DC8280

Accessibility & contrast

On white

6.21

#B03431 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.38

#B03431 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03431

6.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03431	#FFFFFF	#000000	##FFFFFF
##B03431	1.00	6.21	3.38	6.21
#FFFFFF	6.21	1.00	21.00	1.00
#000000	3.38	21.00	1.00	21.00
##FFFFFF	6.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#57502F

Deuteranopia (green-blind)

#766B2D

Tritanopia (blue-blind)

#C20835

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b03431;
/* rgb */ color: rgb(176, 52, 49);
/* oklch */ color: oklch(51.1% 0.161 26.1);

Tailwind

colors: {
  custom: {
    50: '#cf7469',
    500: '#b03431',
    950: '#000000',
  },
}

SCSS

$custom: #b03431;
$custom-light: #cf7469;
$custom-dark: #000000;

JSON

{
  "hex": "#b03431",
  "rgb": {
    "r": 176,
    "g": 52,
    "b": 49
  },
  "hsl": {
    "h": 1.417,
    "s": 56.444,
    "l": 44.118
  },
  "oklch": {
    "l": 0.5112,
    "c": 0.16101,
    "h": 26.1
  },
  "luminance": 0.11908
}

Semantic roles & 50–950 ramp

primary

#B03431

secondary

#78C3C5

accent

#DCE048

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B03431

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

Preview Lab → · Contrast checker → · Palette generator →