#B63828#B63828

#B63828 is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.5% C 0.165 H 30.5°. Best body text is #FFFFFF at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#B63828
RGB	rgb(182, 56, 40)
HSL	hsl(7, 64%, 44%)
HSV	hsv(7, 78%, 71%)
CMYK	cmyk(0%, 69.2%, 78%, 28.6%)
CIE-LAB	lab(42.66, 49.87, 38.20)
CIE-LCH	lch(42.66, 62.82, 37.45°)
OKLab	oklab(52.48% 0.1422 0.0838)
OKLCH	oklch(52.48% 0.165 30.5)
XYZ	xyz(21.0910, 12.9298, 3.3922)
Luminance	0.1293 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63828 #28A6B6

analogous

#B6285F #B63828 #B67F28

triadic

#B63828 #28B638 #3828B6

tetradic

#B63828 #5FB628 #28A6B6 #7F28B6

square

#B63828 #5FB628 #28A6B6 #7F28B6

split-complementary

#B63828 #28B67F #285FB6

monochromatic

#521912 #84291D #B63828 #D65545 #E18377

Accessibility & contrast

On white

5.86

#B63828 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#B63828 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63828

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63828	#FFFFFF	#000000	##FFFFFF
##B63828	1.00	5.86	3.59	5.86
#FFFFFF	5.86	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5325

Deuteranopia (green-blind)

#7C6F23

Tritanopia (blue-blind)

#C80B35

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b63828;
/* rgb */ color: rgb(182, 56, 40);
/* oklch */ color: oklch(52.5% 0.165 30.5);

Tailwind

colors: {
  custom: {
    50: '#d47663',
    500: '#b63828',
    950: '#000000',
  },
}

SCSS

$custom: #b63828;
$custom-light: #d47663;
$custom-dark: #000000;

JSON

{
  "hex": "#b63828",
  "rgb": {
    "r": 182,
    "g": 56,
    "b": 40
  },
  "hsl": {
    "h": 6.761,
    "s": 63.964,
    "l": 43.529
  },
  "oklch": {
    "l": 0.52475,
    "c": 0.16505,
    "h": 30.5
  },
  "luminance": 0.12927
}

Semantic roles & 50–950 ramp

primary

#B63828

secondary

#71BFC9

accent

#D4E741

background

#FEF7F5

surface

#FCEDEA

border

#D5C8C6

text

#160905

muted

#847B79

Preview Lab

Preview with #B63828

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

Preview Lab → · Contrast checker → · Palette generator →