#B0303C#B0303C

#B0303C is a mid, vivid red. Relative luminance 0.117; OKLCH L 50.9% C 0.164 H 20.2°. Best body text is #FFFFFF at 6.30:1 contrast (WCAG AA passes).

Color values

HEX	#B0303C
RGB	rgb(176, 48, 60)
HSL	hsl(354, 57%, 44%)
HSV	hsv(354, 73%, 69%)
CMYK	cmyk(0%, 72.7%, 65.9%, 31%)
CIE-LAB	lab(40.69, 51.93, 23.88)
CIE-LCH	lch(40.69, 57.16, 24.69°)
OKLab	oklab(50.89% 0.1536 0.0567)
OKLCH	oklch(50.89% 0.164 20.2)
XYZ	xyz(19.7792, 11.6732, 5.4857)
Luminance	0.1167 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B0303C #30B0A4

analogous

#B0307C #B0303C #B06430

triadic

#B0303C #3CB030 #303CB0

tetradic

#B0303C #7CB030 #30B0A4 #6430B0

square

#B0303C #7CB030 #30B0A4 #6430B0

split-complementary

#B0303C #30B064 #307CB0

monochromatic

#50161B #80232C #B0303C #CF4E5A #DC7E87

Accessibility & contrast

On white

6.30

#B0303C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#B0303C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B0303C

6.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B0303C	#FFFFFF	#000000	##FFFFFF
##B0303C	1.00	6.30	3.33	6.30
#FFFFFF	6.30	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#544F3B

Deuteranopia (green-blind)

#746A38

Tritanopia (blue-blind)

#C10035

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #b0303c;
/* rgb */ color: rgb(176, 48, 60);
/* oklch */ color: oklch(50.9% 0.164 20.2);

Tailwind

colors: {
  custom: {
    50: '#cf7271',
    500: '#b0303c',
    950: '#000000',
  },
}

SCSS

$custom: #b0303c;
$custom-light: #cf7271;
$custom-dark: #000000;

JSON

{
  "hex": "#b0303c",
  "rgb": {
    "r": 176,
    "g": 48,
    "b": 60
  },
  "hsl": {
    "h": 354.375,
    "s": 57.143,
    "l": 43.922
  },
  "oklch": {
    "l": 0.50889,
    "c": 0.16374,
    "h": 20.2
  },
  "luminance": 0.1167
}

Semantic roles & 50–950 ramp

primary

#B0303C

secondary

#77C5BD

accent

#E0D247

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150807

muted

#837B7A

Preview Lab

Preview with #B0303C

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

Preview Lab → · Contrast checker → · Palette generator →