#B03A28#B03A28

#B03A28 is a mid, vivid red. Relative luminance 0.124; OKLCH L 51.7% C 0.157 H 31.4°. Best body text is #FFFFFF at 6.03:1 contrast (WCAG AA passes).

Color values

HEX	#B03A28
RGB	rgb(176, 58, 40)
HSL	hsl(8, 63%, 42%)
HSV	hsv(8, 77%, 69%)
CMYK	cmyk(0%, 67%, 77.3%, 31%)
CIE-LAB	lab(41.86, 47.00, 37.03)
CIE-LCH	lch(41.86, 59.84, 38.23°)
OKLab	oklab(51.68% 0.1339 0.0818)
OKLCH	oklch(51.68% 0.157 31.4)
XYZ	xyz(19.8028, 12.4123, 3.3602)
Luminance	0.1241 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03A28 #289EB0

analogous

#B0285A #B03A28 #B07E28

triadic

#B03A28 #28B03A #3A28B0

tetradic

#B03A28 #5AB028 #289EB0 #7E28B0

square

#B03A28 #5AB028 #289EB0 #7E28B0

split-complementary

#B03A28 #28B07E #285AB0

monochromatic

#4C1911 #7E2A1D #B03A28 #D45541 #DF8173

Accessibility & contrast

On white

6.03

#B03A28 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#B03A28 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03A28

6.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03A28	#FFFFFF	#000000	##FFFFFF
##B03A28	1.00	6.03	3.48	6.03
#FFFFFF	6.03	1.00	21.00	1.00
#000000	3.48	21.00	1.00	21.00
##FFFFFF	6.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5225

Deuteranopia (green-blind)

#796C24

Tritanopia (blue-blind)

#C21737

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b03a28;
/* rgb */ color: rgb(176, 58, 40);
/* oklch */ color: oklch(51.7% 0.157 31.4);

Tailwind

colors: {
  custom: {
    50: '#d07763',
    500: '#b03a28',
    950: '#000000',
  },
}

SCSS

$custom: #b03a28;
$custom-light: #d07763;
$custom-dark: #000000;

JSON

{
  "hex": "#b03a28",
  "rgb": {
    "r": 176,
    "g": 58,
    "b": 40
  },
  "hsl": {
    "h": 7.941,
    "s": 62.963,
    "l": 42.353
  },
  "oklch": {
    "l": 0.51678,
    "c": 0.15685,
    "h": 31.4
  },
  "luminance": 0.12409
}

Semantic roles & 50–950 ramp

primary

#B03A28

secondary

#6DBBC6

accent

#D0E642

background

#FDF7F5

surface

#FBEDEA

border

#D4C8C6

text

#150905

muted

#837B79

Preview Lab

Preview with #B03A28

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

Preview Lab → · Contrast checker → · Palette generator →