#B64B37#B64B37

#B64B37 is a mid, vivid red. Relative luminance 0.153; OKLCH L 55.0% C 0.143 H 32.5°. Best body text is #FFFFFF at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#B64B37
RGB	rgb(182, 75, 55)
HSL	hsl(9, 54%, 46%)
HSV	hsv(9, 70%, 71%)
CMYK	cmyk(0%, 58.8%, 69.8%, 28.6%)
CIE-LAB	lab(45.98, 42.13, 33.51)
CIE-LCH	lch(45.98, 53.83, 38.49°)
OKLab	oklab(55.03% 0.121 0.077)
OKLCH	oklch(55.03% 0.143 32.5)
XYZ	xyz(22.4993, 15.2561, 5.3736)
Luminance	0.1525 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B64B37 #37A2B6

analogous

#B63763 #B64B37 #B68B37

triadic

#B64B37 #37B64B #4B37B6

tetradic

#B64B37 #63B637 #37A2B6 #8B37B6

square

#B64B37 #63B637 #37A2B6 #8B37B6

split-complementary

#B64B37 #37B68B #3763B6

monochromatic

#58241B #873829 #B64B37 #CE6E5C #DC988B

Accessibility & contrast

On white

5.18

#B64B37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.05

#B64B37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B64B37

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B64B37	#FFFFFF	#000000	##FFFFFF
##B64B37	1.00	5.18	4.05	5.18
#FFFFFF	5.18	1.00	21.00	1.00
#000000	4.05	21.00	1.00	21.00
##FFFFFF	5.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#685E35

Deuteranopia (green-blind)

#827634

Tritanopia (blue-blind)

#C83447

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #b64b37;
/* rgb */ color: rgb(182, 75, 55);
/* oklch */ color: oklch(55.0% 0.143 32.5);

Tailwind

colors: {
  custom: {
    50: '#d3816e',
    500: '#b64b37',
    950: '#000000',
  },
}

SCSS

$custom: #b64b37;
$custom-light: #d3816e;
$custom-dark: #000000;

JSON

{
  "hex": "#b64b37",
  "rgb": {
    "r": 182,
    "g": 75,
    "b": 55
  },
  "hsl": {
    "h": 9.449,
    "s": 53.586,
    "l": 46.471
  },
  "oklch": {
    "l": 0.55034,
    "c": 0.14346,
    "h": 32.5
  },
  "luminance": 0.15253
}

Semantic roles & 50–950 ramp

primary

#B64B37

secondary

#82BCC6

accent

#C6DD4B

background

#FDF8F6

surface

#FBEFEC

border

#D4CAC7

text

#150B07

muted

#837C7A

Preview Lab

Preview with #B64B37

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

Preview Lab → · Contrast checker → · Palette generator →