#B03D37#B03D37

#B03D37 is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.2% C 0.151 H 26.6°. Best body text is #FFFFFF at 5.88:1 contrast (WCAG AA passes).

Color values

HEX	#B03D37
RGB	rgb(176, 61, 55)
HSL	hsl(3, 52%, 45%)
HSV	hsv(3, 69%, 69%)
CMYK	cmyk(0%, 65.3%, 68.8%, 31%)
CIE-LAB	lab(42.53, 46.41, 29.17)
CIE-LCH	lch(42.53, 54.82, 32.15°)
OKLab	oklab(52.24% 0.1351 0.0678)
OKLCH	oklch(52.24% 0.151 26.6)
XYZ	xyz(20.2649, 12.8463, 5.0262)
Luminance	0.1284 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03D37 #37AAB0

analogous

#B0376E #B03D37 #B07937

triadic

#B03D37 #37B03D #3D37B0

tetradic

#B03D37 #6EB037 #37AAB0 #7937B0

square

#B03D37 #6EB037 #37AAB0 #7937B0

split-complementary

#B03D37 #37B079 #376EB0

monochromatic

#531D1A #812D28 #B03D37 #CB5F59 #DA8C88

Accessibility & contrast

On white

5.88

#B03D37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#B03D37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03D37

5.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03D37	#FFFFFF	#000000	##FFFFFF
##B03D37	1.00	5.88	3.57	5.88
#FFFFFF	5.88	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5536

Deuteranopia (green-blind)

#796E34

Tritanopia (blue-blind)

#C1213D

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b03d37;
/* rgb */ color: rgb(176, 61, 55);
/* oklch */ color: oklch(52.2% 0.151 26.6);

Tailwind

colors: {
  custom: {
    50: '#cf786e',
    500: '#b03d37',
    950: '#000000',
  },
}

SCSS

$custom: #b03d37;
$custom-light: #cf786e;
$custom-dark: #000000;

JSON

{
  "hex": "#b03d37",
  "rgb": {
    "r": 176,
    "g": 61,
    "b": 55
  },
  "hsl": {
    "h": 2.975,
    "s": 52.381,
    "l": 45.294
  },
  "oklch": {
    "l": 0.52238,
    "c": 0.15115,
    "h": 26.6
  },
  "luminance": 0.12843
}

Semantic roles & 50–950 ramp

primary

#B03D37

secondary

#7FC0C4

accent

#D5DC4C

background

#FDF7F6

surface

#FBEEEB

border

#D4C9C6

text

#150907

muted

#837B7A

Preview Lab

Preview with #B03D37

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

Preview Lab → · Contrast checker → · Palette generator →