#B63333#B63333

#B63333 is a mid, vivid red. Relative luminance 0.126; OKLCH L 52.1% C 0.168 H 25.2°. Best body text is #FFFFFF at 5.98:1 contrast (WCAG AA passes).

Color values

HEX	#B63333
RGB	rgb(182, 51, 51)
HSL	hsl(0, 56%, 46%)
HSV	hsv(0, 72%, 71%)
CMYK	cmyk(0%, 72%, 72%, 28.6%)
CIE-LAB	lab(42.08, 52.27, 31.28)
CIE-LCH	lch(42.08, 60.91, 30.90°)
OKLab	oklab(52.09% 0.152 0.0714)
OKLCH	oklch(52.09% 0.168 25.2)
XYZ	xyz(21.0751, 12.5549, 4.4450)
Luminance	0.1255 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63333 #33B6B6

analogous

#B63374 #B63333 #B67433

triadic

#B63333 #33B633 #3333B6

tetradic

#B63333 #74B633 #33B6B6 #7433B6

square

#B63333 #74B633 #33B6B6 #7433B6

split-complementary

#B63333 #33B674 #3374B6

monochromatic

#561818 #862626 #B63333 #D05656 #DD8686

Accessibility & contrast

On white

5.98

#B63333 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#B63333 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63333

5.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63333	#FFFFFF	#000000	##FFFFFF
##B63333	1.00	5.98	3.51	5.98
#FFFFFF	5.98	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595132

Deuteranopia (green-blind)

#796E2F

Tritanopia (blue-blind)

#C80035

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b63333;
/* rgb */ color: rgb(182, 51, 51);
/* oklch */ color: oklch(52.1% 0.168 25.2);

Tailwind

colors: {
  custom: {
    50: '#d4746b',
    500: '#b63333',
    950: '#000000',
  },
}

SCSS

$custom: #b63333;
$custom-light: #d4746b;
$custom-dark: #000000;

JSON

{
  "hex": "#b63333",
  "rgb": {
    "r": 182,
    "g": 51,
    "b": 51
  },
  "hsl": {
    "h": 0,
    "s": 56.223,
    "l": 45.686
  },
  "oklch": {
    "l": 0.52089,
    "c": 0.16793,
    "h": 25.2
  },
  "luminance": 0.12552
}

Semantic roles & 50–950 ramp

primary

#B63333

secondary

#7EC7C7

accent

#E0E048

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B63333

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

Preview Lab → · Contrast checker → · Palette generator →