#B63A40#B63A40

#B63A40 is a mid, vivid red. Relative luminance 0.133; OKLCH L 53.0% C 0.160 H 21.8°. Best body text is #FFFFFF at 5.72:1 contrast (WCAG AA passes).

Color values

HEX	#B63A40
RGB	rgb(182, 58, 64)
HSL	hsl(357, 52%, 47%)
HSV	hsv(357, 68%, 71%)
CMYK	cmyk(0%, 68.1%, 64.8%, 28.6%)
CIE-LAB	lab(43.28, 50.24, 24.93)
CIE-LCH	lch(43.28, 56.08, 26.39°)
OKLab	oklab(53.04% 0.1483 0.0593)
OKLCH	oklch(53.04% 0.16 21.8)
XYZ	xyz(21.7321, 13.3444, 6.2809)
Luminance	0.1334 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63A40 #3AB6B0

analogous

#B63A7E #B63A40 #B6723A

triadic

#B63A40 #40B63A #3A40B6

tetradic

#B63A40 #7EB63A #3AB6B0 #723AB6

square

#B63A40 #7EB63A #3AB6B0 #723AB6

split-complementary

#B63A40 #3AB672 #3A7EB6

monochromatic

#591C1F #882B30 #B63A40 #CD6166 #DB8F93

Accessibility & contrast

On white

5.72

#B63A40 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#B63A40 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63A40

5.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63A40	#FFFFFF	#000000	##FFFFFF
##B63A40	1.00	5.72	3.67	5.72
#FFFFFF	5.72	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B553F

Deuteranopia (green-blind)

#7B703D

Tritanopia (blue-blind)

#C81A3D

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b63a40;
/* rgb */ color: rgb(182, 58, 64);
/* oklch */ color: oklch(53.0% 0.160 21.8);

Tailwind

colors: {
  custom: {
    50: '#d37874',
    500: '#b63a40',
    950: '#000000',
  },
}

SCSS

$custom: #b63a40;
$custom-light: #d37874;
$custom-dark: #000000;

JSON

{
  "hex": "#b63a40",
  "rgb": {
    "r": 182,
    "g": 58,
    "b": 64
  },
  "hsl": {
    "h": 357.097,
    "s": 51.667,
    "l": 47.059
  },
  "oklch": {
    "l": 0.53044,
    "c": 0.15968,
    "h": 21.8
  },
  "luminance": 0.13341
}

Semantic roles & 50–950 ramp

primary

#B63A40

secondary

#86C6C3

accent

#DBD44D

background

#FDF7F7

surface

#FBEEED

border

#D4C9C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B63A40

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

Preview Lab → · Contrast checker → · Palette generator →