#B03729#B03729

#B03729 is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.3% C 0.159 H 30.0°. Best body text is #FFFFFF at 6.13:1 contrast (WCAG AA passes).

Color values

HEX	#B03729
RGB	rgb(176, 55, 41)
HSL	hsl(6, 62%, 43%)
HSV	hsv(6, 77%, 69%)
CMYK	cmyk(0%, 68.8%, 76.7%, 31%)
CIE-LAB	lab(41.41, 48.29, 36.00)
CIE-LCH	lch(41.41, 60.23, 36.71°)
OKLab	oklab(51.34% 0.1381 0.0798)
OKLCH	oklch(51.34% 0.159 30)
XYZ	xyz(19.6731, 12.1255, 3.4019)
Luminance	0.1212 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03729 #29A2B0

analogous

#B0295F #B03729 #B07A29

triadic

#B03729 #29B037 #3729B0

tetradic

#B03729 #5FB029 #29A2B0 #7A29B0

square

#B03729 #5FB029 #29A2B0 #7A29B0

split-complementary

#B03729 #29B07A #295FB0

monochromatic

#4D1812 #7E271D #B03729 #D35243 #DF8075

Accessibility & contrast

On white

6.13

#B03729 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#B03729 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03729

6.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03729	#FFFFFF	#000000	##FFFFFF
##B03729	1.00	6.13	3.42	6.13
#FFFFFF	6.13	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5126

Deuteranopia (green-blind)

#786B24

Tritanopia (blue-blind)

#C20F35

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b03729;
/* rgb */ color: rgb(176, 55, 41);
/* oklch */ color: oklch(51.3% 0.159 30.0);

Tailwind

colors: {
  custom: {
    50: '#d07564',
    500: '#b03729',
    950: '#000000',
  },
}

SCSS

$custom: #b03729;
$custom-light: #d07564;
$custom-dark: #000000;

JSON

{
  "hex": "#b03729",
  "rgb": {
    "r": 176,
    "g": 55,
    "b": 41
  },
  "hsl": {
    "h": 6.222,
    "s": 62.212,
    "l": 42.549
  },
  "oklch": {
    "l": 0.51344,
    "c": 0.15948,
    "h": 30
  },
  "luminance": 0.12123
}

Semantic roles & 50–950 ramp

primary

#B03729

secondary

#6FBDC6

accent

#D4E543

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150905

muted

#837B7A

Preview Lab

Preview with #B03729

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

Preview Lab → · Contrast checker → · Palette generator →