#B63539#B63539

#B63539 is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.4% C 0.165 H 23.3°. Best body text is #FFFFFF at 5.90:1 contrast (WCAG AA passes).

Color values

HEX	#B63539
RGB	rgb(182, 53, 57)
HSL	hsl(358, 55%, 46%)
HSV	hsv(358, 71%, 71%)
CMYK	cmyk(0%, 70.9%, 68.7%, 28.6%)
CIE-LAB	lab(42.44, 51.81, 28.13)
CIE-LCH	lch(42.44, 58.95, 28.50°)
OKLab	oklab(52.39% 0.1518 0.0655)
OKLCH	oklch(52.39% 0.165 23.3)
XYZ	xyz(21.3053, 12.7898, 5.2169)
Luminance	0.1279 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63539 #35B6B2

analogous

#B63579 #B63539 #B67135

triadic

#B63539 #39B635 #3539B6

tetradic

#B63539 #79B635 #35B6B2 #7135B6

square

#B63539 #79B635 #35B6B2 #7135B6

split-complementary

#B63539 #35B671 #3579B6

monochromatic

#57191B #87272A #B63539 #CF595D #DD898B

Accessibility & contrast

On white

5.90

#B63539 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#B63539 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63539

5.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63539	#FFFFFF	#000000	##FFFFFF
##B63539	1.00	5.90	3.56	5.90
#FFFFFF	5.90	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595338

Deuteranopia (green-blind)

#7A6E35

Tritanopia (blue-blind)

#C80838

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b63539;
/* rgb */ color: rgb(182, 53, 57);
/* oklch */ color: oklch(52.4% 0.165 23.3);

Tailwind

colors: {
  custom: {
    50: '#d4756f',
    500: '#b63539',
    950: '#000000',
  },
}

SCSS

$custom: #b63539;
$custom-light: #d4756f;
$custom-dark: #000000;

JSON

{
  "hex": "#b63539",
  "rgb": {
    "r": 182,
    "g": 53,
    "b": 57
  },
  "hsl": {
    "h": 358.14,
    "s": 54.894,
    "l": 46.078
  },
  "oklch": {
    "l": 0.52386,
    "c": 0.16536,
    "h": 23.3
  },
  "luminance": 0.12787
}

Semantic roles & 50–950 ramp

primary

#B63539

secondary

#80C7C4

accent

#DEDA4A

background

#FEF7F6

surface

#FCEDEC

border

#D5C8C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #B63539

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

Preview Lab → · Contrast checker → · Palette generator →