#B63838#B63838

#B63838 is a mid, vivid red. Relative luminance 0.131; OKLCH L 52.7% C 0.163 H 24.7°. Best body text is #FFFFFF at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#B63838
RGB	rgb(182, 56, 56)
HSL	hsl(0, 53%, 47%)
HSV	hsv(0, 69%, 71%)
CMYK	cmyk(0%, 69.2%, 69.2%, 28.6%)
CIE-LAB	lab(42.86, 50.59, 29.22)
CIE-LCH	lch(42.86, 58.42, 30.01°)
OKLab	oklab(52.69% 0.1477 0.0678)
OKLCH	oklch(52.69% 0.163 24.7)
XYZ	xyz(21.4217, 13.0621, 5.1339)
Luminance	0.1306 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63838 #38B6B6

analogous

#B63877 #B63838 #B67738

triadic

#B63838 #38B638 #3838B6

tetradic

#B63838 #77B638 #38B6B6 #7738B6

square

#B63838 #77B638 #38B6B6 #7738B6

split-complementary

#B63838 #38B677 #3877B6

monochromatic

#581B1B #872A2A #B63838 #CD5E5E #DC8D8D

Accessibility & contrast

On white

5.81

#B63838 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#B63838 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63838

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63838	#FFFFFF	#000000	##FFFFFF
##B63838	1.00	5.81	3.61	5.81
#FFFFFF	5.81	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B5437

Deuteranopia (green-blind)

#7B6F34

Tritanopia (blue-blind)

#C81239

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b63838;
/* rgb */ color: rgb(182, 56, 56);
/* oklch */ color: oklch(52.7% 0.163 24.7);

Tailwind

colors: {
  custom: {
    50: '#d3766e',
    500: '#b63838',
    950: '#000000',
  },
}

SCSS

$custom: #b63838;
$custom-light: #d3766e;
$custom-dark: #000000;

JSON

{
  "hex": "#b63838",
  "rgb": {
    "r": 182,
    "g": 56,
    "b": 56
  },
  "hsl": {
    "h": 0,
    "s": 52.941,
    "l": 46.667
  },
  "oklch": {
    "l": 0.52688,
    "c": 0.16255,
    "h": 24.7
  },
  "luminance": 0.13059
}

Semantic roles & 50–950 ramp

primary

#B63838

secondary

#84C6C6

accent

#DCDC4B

background

#FEF7F6

surface

#FCEDEC

border

#D5C8C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #B63838

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

Preview Lab → · Contrast checker → · Palette generator →