#B5302D#B5302D

#B5302D is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.5% C 0.170 H 26.5°. Best body text is #FFFFFF at 6.13:1 contrast (WCAG AA passes).

Color values

HEX	#B5302D
RGB	rgb(181, 48, 45)
HSL	hsl(1, 60%, 44%)
HSV	hsv(1, 75%, 71%)
CMYK	cmyk(0%, 73.5%, 75.1%, 29%)
CIE-LAB	lab(41.42, 52.78, 33.99)
CIE-LCH	lch(41.42, 62.78, 32.79°)
OKLab	oklab(51.54% 0.1524 0.0761)
OKLCH	oklch(51.54% 0.17 26.5)
XYZ	xyz(20.5890, 12.1303, 3.7394)
Luminance	0.1213 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B5302D #2DB2B5

analogous

#B52D6E #B5302D #B5742D

triadic

#B5302D #2DB530 #302DB5

tetradic

#B5302D #6EB52D #2DB2B5 #742DB5

square

#B5302D #6EB52D #2DB2B5 #742DB5

split-complementary

#B5302D #2DB574 #2D6EB5

monochromatic

#531615 #842321 #B5302D #D3504D #DF807E

Accessibility & contrast

On white

6.13

#B5302D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#B5302D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B5302D

6.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B5302D	#FFFFFF	#000000	##FFFFFF
##B5302D	1.00	6.13	3.43	6.13
#FFFFFF	6.13	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#574F2B

Deuteranopia (green-blind)

#786C28

Tritanopia (blue-blind)

#C70031

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b5302d;
/* rgb */ color: rgb(181, 48, 45);
/* oklch */ color: oklch(51.5% 0.170 26.5);

Tailwind

colors: {
  custom: {
    50: '#d47266',
    500: '#b5302d',
    950: '#000000',
  },
}

SCSS

$custom: #b5302d;
$custom-light: #d47266;
$custom-dark: #000000;

JSON

{
  "hex": "#b5302d",
  "rgb": {
    "r": 181,
    "g": 48,
    "b": 45
  },
  "hsl": {
    "h": 1.324,
    "s": 60.177,
    "l": 44.314
  },
  "oklch": {
    "l": 0.51536,
    "c": 0.17037,
    "h": 26.5
  },
  "luminance": 0.12127
}

Semantic roles & 50–950 ramp

primary

#B5302D

secondary

#76C6C7

accent

#E0E344

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B5302D

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

Preview Lab → · Contrast checker → · Palette generator →