#B03F2A#B03F2A

#B03F2A is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.3% C 0.152 H 32.6°. Best body text is #FFFFFF at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#B03F2A
RGB	rgb(176, 63, 42)
HSL	hsl(9, 61%, 43%)
HSV	hsv(9, 76%, 69%)
CMYK	cmyk(0%, 64.2%, 76.1%, 31%)
CIE-LAB	lab(42.70, 44.90, 36.82)
CIE-LCH	lch(42.70, 58.07, 39.35°)
OKLab	oklab(52.31% 0.1277 0.0818)
OKLCH	oklch(52.31% 0.152 32.6)
XYZ	xyz(20.1021, 12.9552, 3.6321)
Luminance	0.1295 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03F2A #2A9BB0

analogous

#B02A58 #B03F2A #B0822A

triadic

#B03F2A #2AB03F #3F2AB0

tetradic

#B03F2A #58B02A #2A9BB0 #822AB0

square

#B03F2A #58B02A #2A9BB0 #822AB0

split-complementary

#B03F2A #2AB082 #2A58B0

monochromatic

#4D1C12 #7F2D1E #B03F2A #D35B45 #DE8676

Accessibility & contrast

On white

5.85

#B03F2A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#B03F2A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03F2A

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03F2A	#FFFFFF	#000000	##FFFFFF
##B03F2A	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)

#5F5527

Deuteranopia (green-blind)

#7B6E26

Tritanopia (blue-blind)

#C2223B

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b03f2a;
/* rgb */ color: rgb(176, 63, 42);
/* oklch */ color: oklch(52.3% 0.152 32.6);

Tailwind

colors: {
  custom: {
    50: '#cf7965',
    500: '#b03f2a',
    950: '#000000',
  },
}

SCSS

$custom: #b03f2a;
$custom-light: #cf7965;
$custom-dark: #000000;

JSON

{
  "hex": "#b03f2a",
  "rgb": {
    "r": 176,
    "g": 63,
    "b": 42
  },
  "hsl": {
    "h": 9.403,
    "s": 61.468,
    "l": 42.745
  },
  "oklch": {
    "l": 0.5231,
    "c": 0.15168,
    "h": 32.6
  },
  "luminance": 0.12952
}

Semantic roles & 50–950 ramp

primary

#B03F2A

secondary

#70B8C6

accent

#CBE543

background

#FDF7F6

surface

#FBEEEB

border

#D4C9C6

text

#150905

muted

#837B7A

Preview Lab

Preview with #B03F2A

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

Preview Lab → · Contrast checker → · Palette generator →