#B63B40#B63B40

#B63B40 is a mid, vivid red. Relative luminance 0.134; OKLCH L 53.2% C 0.159 H 22.1°. Best body text is #FFFFFF at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#B63B40
RGB	rgb(182, 59, 64)
HSL	hsl(358, 51%, 47%)
HSV	hsv(358, 68%, 71%)
CMYK	cmyk(0%, 67.6%, 64.8%, 28.6%)
CIE-LAB	lab(43.43, 49.83, 25.12)
CIE-LCH	lch(43.43, 55.80, 26.75°)
OKLab	oklab(53.16% 0.147 0.0597)
OKLCH	oklch(53.16% 0.159 22.1)
XYZ	xyz(21.7830, 13.4463, 6.2979)
Luminance	0.1344 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63B40 #3BB6B1

analogous

#B63B7E #B63B40 #B6743B

triadic

#B63B40 #40B63B #3B40B6

tetradic

#B63B40 #7EB63B #3BB6B1 #743BB6

square

#B63B40 #7EB63B #3BB6B1 #743BB6

split-complementary

#B63B40 #3BB674 #3B7EB6

monochromatic

#5A1D1F #882C30 #B63B40 #CC6266 #DB9093

Accessibility & contrast

On white

5.69

#B63B40 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#B63B40 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63B40

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63B40	#FFFFFF	#000000	##FFFFFF
##B63B40	1.00	5.69	3.69	5.69
#FFFFFF	5.69	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C563F

Deuteranopia (green-blind)

#7B703D

Tritanopia (blue-blind)

#C81C3E

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b63b40;
/* rgb */ color: rgb(182, 59, 64);
/* oklch */ color: oklch(53.2% 0.159 22.1);

Tailwind

colors: {
  custom: {
    50: '#d37874',
    500: '#b63b40',
    950: '#000000',
  },
}

SCSS

$custom: #b63b40;
$custom-light: #d37874;
$custom-dark: #000000;

JSON

{
  "hex": "#b63b40",
  "rgb": {
    "r": 182,
    "g": 59,
    "b": 64
  },
  "hsl": {
    "h": 357.561,
    "s": 51.037,
    "l": 47.255
  },
  "oklch": {
    "l": 0.53156,
    "c": 0.15863,
    "h": 22.1
  },
  "luminance": 0.13443
}

Semantic roles & 50–950 ramp

primary

#B63B40

secondary

#87C6C3

accent

#DBD54D

background

#FDF7F7

surface

#FBEEED

border

#D4C9C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B63B40

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

Preview Lab → · Contrast checker → · Palette generator →