#B03143#B03143

#B03143 is a mid, vivid red. Relative luminance 0.118; OKLCH L 51.1% C 0.163 H 17.3°. Best body text is #FFFFFF at 6.24:1 contrast (WCAG AA passes).

Color values

HEX	#B03143
RGB	rgb(176, 49, 67)
HSL	hsl(351, 56%, 44%)
HSV	hsv(351, 72%, 69%)
CMYK	cmyk(0%, 72.2%, 61.9%, 31%)
CIE-LAB	lab(40.95, 52.00, 19.87)
CIE-LCH	lch(40.95, 55.67, 20.91°)
OKLab	oklab(51.12% 0.1552 0.0482)
OKLCH	oklch(51.12% 0.163 17.3)
XYZ	xyz(20.0180, 11.8349, 6.5394)
Luminance	0.1183 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03143 #31B09E

analogous

#B03183 #B03143 #B05F31

triadic

#B03143 #43B031 #3143B0

tetradic

#B03143 #83B031 #31B09E #5F31B0

square

#B03143 #83B031 #31B09E #5F31B0

split-complementary

#B03143 #31B05F #3183B0

monochromatic

#50161F #802431 #B03143 #CE5062 #DC808D

Accessibility & contrast

On white

6.24

#B03143 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.37

#B03143 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03143

6.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03143	#FFFFFF	#000000	##FFFFFF
##B03143	1.00	6.24	3.37	6.24
#FFFFFF	6.24	1.00	21.00	1.00
#000000	3.37	21.00	1.00	21.00
##FFFFFF	6.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#535043

Deuteranopia (green-blind)

#746A40

Tritanopia (blue-blind)

#C10939

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b03143;
/* rgb */ color: rgb(176, 49, 67);
/* oklch */ color: oklch(51.1% 0.163 17.3);

Tailwind

colors: {
  custom: {
    50: '#ce7377',
    500: '#b03143',
    950: '#000000',
  },
}

SCSS

$custom: #b03143;
$custom-light: #ce7377;
$custom-dark: #000000;

JSON

{
  "hex": "#b03143",
  "rgb": {
    "r": 176,
    "g": 49,
    "b": 67
  },
  "hsl": {
    "h": 351.496,
    "s": 56.444,
    "l": 44.118
  },
  "oklch": {
    "l": 0.51124,
    "c": 0.16254,
    "h": 17.3
  },
  "luminance": 0.11832
}

Semantic roles & 50–950 ramp

primary

#B03143

secondary

#78C5BA

accent

#E0CA48

background

#FDF7F7

surface

#FBEDED

border

#D4C8C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B03143

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

Preview Lab → · Contrast checker → · Palette generator →