#B03039#B03039

#B03039 is a mid, vivid red. Relative luminance 0.116; OKLCH L 50.8% C 0.164 H 21.6°. Best body text is #FFFFFF at 6.31:1 contrast (WCAG AA passes).

Color values

HEX	#B03039
RGB	rgb(176, 48, 57)
HSL	hsl(356, 57%, 44%)
HSV	hsv(356, 73%, 69%)
CMYK	cmyk(0%, 72.7%, 67.6%, 31%)
CIE-LAB	lab(40.64, 51.77, 25.66)
CIE-LCH	lch(40.64, 57.78, 26.37°)
OKLab	oklab(50.84% 0.1525 0.0603)
OKLCH	oklch(50.84% 0.164 21.6)
XYZ	xyz(19.7021, 11.6423, 5.0799)
Luminance	0.1164 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03039 #30B0A7

analogous

#B03079 #B03039 #B06730

triadic

#B03039 #39B030 #3039B0

tetradic

#B03039 #79B030 #30B0A7 #6730B0

square

#B03039 #79B030 #30B0A7 #6730B0

split-complementary

#B03039 #30B067 #3079B0

monochromatic

#50161A #802329 #B03039 #CF4E57 #DC7E85

Accessibility & contrast

On white

6.31

#B03039 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#B03039 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03039

6.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03039	#FFFFFF	#000000	##FFFFFF
##B03039	1.00	6.31	3.33	6.31
#FFFFFF	6.31	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#544E38

Deuteranopia (green-blind)

#746A35

Tritanopia (blue-blind)

#C10034

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #b03039;
/* rgb */ color: rgb(176, 48, 57);
/* oklch */ color: oklch(50.8% 0.164 21.6);

Tailwind

colors: {
  custom: {
    50: '#cf726f',
    500: '#b03039',
    950: '#000000',
  },
}

SCSS

$custom: #b03039;
$custom-light: #cf726f;
$custom-dark: #000000;

JSON

{
  "hex": "#b03039",
  "rgb": {
    "r": 176,
    "g": 48,
    "b": 57
  },
  "hsl": {
    "h": 355.781,
    "s": 57.143,
    "l": 43.922
  },
  "oklch": {
    "l": 0.50836,
    "c": 0.16393,
    "h": 21.6
  },
  "luminance": 0.11639
}

Semantic roles & 50–950 ramp

primary

#B03039

secondary

#77C5BF

accent

#E0D647

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150807

muted

#837B7A

Preview Lab

Preview with #B03039

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

Preview Lab → · Contrast checker → · Palette generator →