#B63729#B63729

#B63729 is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.4% C 0.166 H 29.9°. Best body text is #FFFFFF at 5.89:1 contrast (WCAG AA passes).

Color values

HEX	#B63729
RGB	rgb(182, 55, 41)
HSL	hsl(6, 63%, 44%)
HSV	hsv(6, 77%, 71%)
CMYK	cmyk(0%, 69.8%, 77.5%, 28.6%)
CIE-LAB	lab(42.52, 50.31, 37.51)
CIE-LCH	lch(42.52, 62.75, 36.71°)
OKLab	oklab(52.38% 0.1437 0.0826)
OKLCH	oklch(52.38% 0.166 29.9)
XYZ	xyz(21.0602, 12.8407, 3.4670)
Luminance	0.1284 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63729 #29A8B6

analogous

#B62961 #B63729 #B67D29

triadic

#B63729 #29B637 #3729B6

tetradic

#B63729 #61B629 #29A8B6 #7D29B6

square

#B63729 #61B629 #29A8B6 #7D29B6

split-complementary

#B63729 #29B67D #2961B6

monochromatic

#521912 #84281E #B63729 #D55547 #E18379

Accessibility & contrast

On white

5.89

#B63729 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#B63729 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63729

5.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63729	#FFFFFF	#000000	##FFFFFF
##B63729	1.00	5.89	3.57	5.89
#FFFFFF	5.89	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5326

Deuteranopia (green-blind)

#7B6F24

Tritanopia (blue-blind)

#C80735

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b63729;
/* rgb */ color: rgb(182, 55, 41);
/* oklch */ color: oklch(52.4% 0.166 29.9);

Tailwind

colors: {
  custom: {
    50: '#d47664',
    500: '#b63729',
    950: '#000000',
  },
}

SCSS

$custom: #b63729;
$custom-light: #d47664;
$custom-dark: #000000;

JSON

{
  "hex": "#b63729",
  "rgb": {
    "r": 182,
    "g": 55,
    "b": 41
  },
  "hsl": {
    "h": 5.957,
    "s": 63.229,
    "l": 43.725
  },
  "oklch": {
    "l": 0.52378,
    "c": 0.16579,
    "h": 29.9
  },
  "luminance": 0.12838
}

Semantic roles & 50–950 ramp

primary

#B63729

secondary

#72C0C9

accent

#D6E642

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160905

muted

#847B7A

Preview Lab

Preview with #B63729

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

Preview Lab → · Contrast checker → · Palette generator →