#B03F28#B03F28

#B03F28 is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.3% C 0.152 H 33.3°. Best body text is #FFFFFF at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#B03F28
RGB	rgb(176, 63, 40)
HSL	hsl(10, 63%, 42%)
HSV	hsv(10, 77%, 69%)
CMYK	cmyk(0%, 64.2%, 77.3%, 31%)
CIE-LAB	lab(42.67, 44.82, 37.89)
CIE-LCH	lch(42.67, 58.69, 40.21°)
OKLab	oklab(52.29% 0.1271 0.0836)
OKLCH	oklch(52.29% 0.152 33.3)
XYZ	xyz(20.0672, 12.9412, 3.4483)
Luminance	0.1294 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03F28 #2899B0

analogous

#B02855 #B03F28 #B08328

triadic

#B03F28 #28B03F #3F28B0

tetradic

#B03F28 #55B028 #2899B0 #8328B0

square

#B03F28 #55B028 #2899B0 #8328B0

split-complementary

#B03F28 #28B083 #2855B0

monochromatic

#4C1B11 #7E2D1D #B03F28 #D45A41 #DF8573

Accessibility & contrast

On white

5.85

#B03F28 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#B03F28 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03F28

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03F28	#FFFFFF	#000000	##FFFFFF
##B03F28	1.00	5.85	3.59	5.85
#FFFFFF	5.85	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F5525

Deuteranopia (green-blind)

#7B6E24

Tritanopia (blue-blind)

#C2213A

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b03f28;
/* rgb */ color: rgb(176, 63, 40);
/* oklch */ color: oklch(52.3% 0.152 33.3);

Tailwind

colors: {
  custom: {
    50: '#cf7963',
    500: '#b03f28',
    950: '#000000',
  },
}

SCSS

$custom: #b03f28;
$custom-light: #cf7963;
$custom-dark: #000000;

JSON

{
  "hex": "#b03f28",
  "rgb": {
    "r": 176,
    "g": 63,
    "b": 40
  },
  "hsl": {
    "h": 10.147,
    "s": 62.963,
    "l": 42.353
  },
  "oklch": {
    "l": 0.52287,
    "c": 0.15211,
    "h": 33.3
  },
  "luminance": 0.12938
}

Semantic roles & 50–950 ramp

primary

#B03F28

secondary

#6DB7C6

accent

#CAE642

background

#FDF7F6

surface

#FBEEEB

border

#D4C9C6

text

#150905

muted

#837B7A

Preview Lab

Preview with #B03F28

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

Preview Lab → · Contrast checker → · Palette generator →