#B03231#B03231

#B03231 is a mid, vivid red. Relative luminance 0.117; OKLCH L 50.9% C 0.163 H 25.5°. Best body text is #FFFFFF at 6.28:1 contrast (WCAG AA passes).

Color values

HEX	#B03231
RGB	rgb(176, 50, 49)
HSL	hsl(0, 56%, 44%)
HSV	hsv(0, 72%, 69%)
CMYK	cmyk(0%, 71.6%, 72.2%, 31%)
CIE-LAB	lab(40.79, 50.61, 30.68)
CIE-LCH	lch(40.79, 59.18, 31.22°)
OKLab	oklab(50.91% 0.1471 0.07)
OKLCH	oklch(50.91% 0.163 25.5)
XYZ	xyz(19.6017, 11.7360, 4.1383)
Luminance	0.1173 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03231 #31AFB0

analogous

#B03170 #B03231 #B07131

triadic

#B03231 #31B032 #3231B0

tetradic

#B03231 #70B031 #31AFB0 #7131B0

square

#B03231 #70B031 #31AFB0 #7131B0

split-complementary

#B03231 #31B071 #3170B0

monochromatic

#501716 #802424 #B03231 #CE5150 #DC8180

Accessibility & contrast

On white

6.28

#B03231 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#B03231 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03231

6.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03231	#FFFFFF	#000000	##FFFFFF
##B03231	1.00	6.28	3.35	6.28
#FFFFFF	6.28	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#564F30

Deuteranopia (green-blind)

#766A2D

Tritanopia (blue-blind)

#C20133

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #b03231;
/* rgb */ color: rgb(176, 50, 49);
/* oklch */ color: oklch(50.9% 0.163 25.5);

Tailwind

colors: {
  custom: {
    50: '#d07369',
    500: '#b03231',
    950: '#000000',
  },
}

SCSS

$custom: #b03231;
$custom-light: #d07369;
$custom-dark: #000000;

JSON

{
  "hex": "#b03231",
  "rgb": {
    "r": 176,
    "g": 50,
    "b": 49
  },
  "hsl": {
    "h": 0.472,
    "s": 56.444,
    "l": 44.118
  },
  "oklch": {
    "l": 0.50911,
    "c": 0.16289,
    "h": 25.5
  },
  "luminance": 0.11733
}

Semantic roles & 50–950 ramp

primary

#B03231

secondary

#78C4C5

accent

#DFE048

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B03231

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

Preview Lab → · Contrast checker → · Palette generator →