#B52B2B#B52B2B

#B52B2B is a mid, vivid red. Relative luminance 0.117; OKLCH L 51.1% C 0.175 H 26.0°. Best body text is #FFFFFF at 6.28:1 contrast (WCAG AA passes).

Color values

HEX	#B52B2B
RGB	rgb(181, 43, 43)
HSL	hsl(0, 62%, 44%)
HSV	hsv(0, 76%, 71%)
CMYK	cmyk(0%, 76.2%, 76.2%, 29%)
CIE-LAB	lab(40.78, 54.41, 34.45)
CIE-LCH	lch(40.78, 64.40, 32.34°)
OKLab	oklab(51.05% 0.1572 0.0766)
OKLCH	oklch(51.05% 0.175 26)
XYZ	xyz(20.3584, 11.7291, 3.4770)
Luminance	0.1173 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B52B2B #2BB5B5

analogous

#B52B70 #B52B2B #B5702B

triadic

#B52B2B #2BB52B #2B2BB5

tetradic

#B52B2B #70B52B #2BB5B5 #702BB5

square

#B52B2B #70B52B #2BB5B5 #702BB5

split-complementary

#B52B2B #2BB570 #2B70B5

monochromatic

#521414 #841F1F #B52B2B #D44949 #E07B7B

Accessibility & contrast

On white

6.28

#B52B2B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#B52B2B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B52B2B

6.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B52B2B	#FFFFFF	#000000	##FFFFFF
##B52B2B	1.00	6.28	3.35	6.28
#FFFFFF	6.28	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#554D29

Deuteranopia (green-blind)

#776B26

Tritanopia (blue-blind)

#C7002D

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #b52b2b;
/* rgb */ color: rgb(181, 43, 43);
/* oklch */ color: oklch(51.1% 0.175 26.0);

Tailwind

colors: {
  custom: {
    50: '#d47065',
    500: '#b52b2b',
    950: '#000000',
  },
}

SCSS

$custom: #b52b2b;
$custom-light: #d47065;
$custom-dark: #000000;

JSON

{
  "hex": "#b52b2b",
  "rgb": {
    "r": 181,
    "g": 43,
    "b": 43
  },
  "hsl": {
    "h": 0,
    "s": 61.607,
    "l": 43.922
  },
  "oklch": {
    "l": 0.51051,
    "c": 0.17483,
    "h": 26
  },
  "luminance": 0.11726
}

Semantic roles & 50–950 ramp

primary

#B52B2B

secondary

#74C8C8

accent

#E5E543

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160805

muted

#847B7A

Preview Lab

Preview with #B52B2B

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

Preview Lab → · Contrast checker → · Palette generator →