#B5302B#B5302B

#B5302B is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.5% C 0.171 H 27.2°. Best body text is #FFFFFF at 6.14:1 contrast (WCAG AA passes).

Color values

HEX	#B5302B
RGB	rgb(181, 48, 43)
HSL	hsl(2, 62%, 44%)
HSV	hsv(2, 76%, 71%)
CMYK	cmyk(0%, 73.5%, 76.2%, 29%)
CIE-LAB	lab(41.40, 52.70, 35.12)
CIE-LCH	lch(41.40, 63.33, 33.68°)
OKLab	oklab(51.51% 0.1518 0.0781)
OKLCH	oklch(51.51% 0.171 27.2)
XYZ	xyz(20.5514, 12.1152, 3.5414)
Luminance	0.1211 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B5302B #2BB0B5

analogous

#B52B6B #B5302B #B5752B

triadic

#B5302B #2BB530 #302BB5

tetradic

#B5302B #6BB52B #2BB0B5 #752BB5

square

#B5302B #6BB52B #2BB0B5 #752BB5

split-complementary

#B5302B #2BB575 #2B6BB5

monochromatic

#521614 #84231F #B5302B #D44E49 #E07E7B

Accessibility & contrast

On white

6.14

#B5302B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#B5302B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B5302B

6.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B5302B	#FFFFFF	#000000	##FFFFFF
##B5302B	1.00	6.14	3.42	6.14
#FFFFFF	6.14	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#584F29

Deuteranopia (green-blind)

#796C26

Tritanopia (blue-blind)

#C70030

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b5302b;
/* rgb */ color: rgb(181, 48, 43);
/* oklch */ color: oklch(51.5% 0.171 27.2);

Tailwind

colors: {
  custom: {
    50: '#d47265',
    500: '#b5302b',
    950: '#000000',
  },
}

SCSS

$custom: #b5302b;
$custom-light: #d47265;
$custom-dark: #000000;

JSON

{
  "hex": "#b5302b",
  "rgb": {
    "r": 181,
    "g": 48,
    "b": 43
  },
  "hsl": {
    "h": 2.174,
    "s": 61.607,
    "l": 43.922
  },
  "oklch": {
    "l": 0.51511,
    "c": 0.17065,
    "h": 27.2
  },
  "luminance": 0.12112
}

Semantic roles & 50–950 ramp

primary

#B5302B

secondary

#74C5C8

accent

#DFE543

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160905

muted

#847B7A

Preview Lab

Preview with #B5302B

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

Preview Lab → · Contrast checker → · Palette generator →