#B63C3F#B63C3F

#B63C3F is a mid, vivid red. Relative luminance 0.135; OKLCH L 53.3% C 0.158 H 22.9°. Best body text is #FFFFFF at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#B63C3F
RGB	rgb(182, 60, 63)
HSL	hsl(359, 50%, 47%)
HSV	hsv(359, 67%, 71%)
CMYK	cmyk(0%, 67%, 65.4%, 28.6%)
CIE-LAB	lab(43.56, 49.35, 25.89)
CIE-LCH	lch(43.56, 55.73, 27.68°)
OKLab	oklab(53.25% 0.1453 0.0614)
OKLCH	oklch(53.25% 0.158 22.9)
XYZ	xyz(21.8067, 13.5388, 6.1666)
Luminance	0.1354 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63C3F #3CB6B3

analogous

#B63C7C #B63C3F #B6763C

triadic

#B63C3F #3FB63C #3C3FB6

tetradic

#B63C3F #7CB63C #3CB6B3 #763CB6

square

#B63C3F #7CB63C #3CB6B3 #763CB6

split-complementary

#B63C3F #3CB676 #3C7CB6

monochromatic

#5A1E1F #882D2F #B63C3F #CC6366 #DB9193

Accessibility & contrast

On white

5.66

#B63C3F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#B63C3F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63C3F

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63C3F	#FFFFFF	#000000	##FFFFFF
##B63C3F	1.00	5.66	3.71	5.66
#FFFFFF	5.66	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D563E

Deuteranopia (green-blind)

#7B713C

Tritanopia (blue-blind)

#C81E3E

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b63c3f;
/* rgb */ color: rgb(182, 60, 63);
/* oklch */ color: oklch(53.3% 0.158 22.9);

Tailwind

colors: {
  custom: {
    50: '#d37974',
    500: '#b63c3f',
    950: '#000000',
  },
}

SCSS

$custom: #b63c3f;
$custom-light: #d37974;
$custom-dark: #000000;

JSON

{
  "hex": "#b63c3f",
  "rgb": {
    "r": 182,
    "g": 60,
    "b": 63
  },
  "hsl": {
    "h": 358.525,
    "s": 50.413,
    "l": 47.451
  },
  "oklch": {
    "l": 0.53252,
    "c": 0.15769,
    "h": 22.9
  },
  "luminance": 0.13536
}

Semantic roles & 50–950 ramp

primary

#B63C3F

secondary

#88C6C4

accent

#DAD64E

background

#FDF7F7

surface

#FBEEED

border

#D4C9C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B63C3F

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

Preview Lab → · Contrast checker → · Palette generator →