#B63A2F#B63A2F

#B63A2F is a mid, vivid red. Relative luminance 0.132; OKLCH L 52.8% C 0.162 H 28.8°. Best body text is #FFFFFF at 5.78:1 contrast (WCAG AA passes).

Color values

HEX	#B63A2F
RGB	rgb(182, 58, 47)
HSL	hsl(5, 59%, 45%)
HSV	hsv(5, 74%, 71%)
CMYK	cmyk(0%, 68.1%, 74.2%, 28.6%)
CIE-LAB	lab(43.03, 49.35, 34.69)
CIE-LCH	lch(43.03, 60.32, 35.11°)
OKLab	oklab(52.78% 0.142 0.078)
OKLCH	oklch(52.78% 0.162 28.8)
XYZ	xyz(21.3199, 13.1796, 4.1101)
Luminance	0.1318 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63A2F #2FABB6

analogous

#B62F67 #B63A2F #B67E2F

triadic

#B63A2F #2FB63A #3A2FB6

tetradic

#B63A2F #67B62F #2FABB6 #7E2FB6

square

#B63A2F #67B62F #2FABB6 #7E2FB6

split-complementary

#B63A2F #2FB67E #2F67B6

monochromatic

#551B16 #852A22 #B63A2F #D25B50 #DE8981

Accessibility & contrast

On white

5.78

#B63A2F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#B63A2F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63A2F

5.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63A2F	#FFFFFF	#000000	##FFFFFF
##B63A2F	1.00	5.78	3.64	5.78
#FFFFFF	5.78	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D542D

Deuteranopia (green-blind)

#7C702B

Tritanopia (blue-blind)

#C81438

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b63a2f;
/* rgb */ color: rgb(182, 58, 47);
/* oklch */ color: oklch(52.8% 0.162 28.8);

Tailwind

colors: {
  custom: {
    50: '#d47768',
    500: '#b63a2f',
    950: '#000000',
  },
}

SCSS

$custom: #b63a2f;
$custom-light: #d47768;
$custom-dark: #000000;

JSON

{
  "hex": "#b63a2f",
  "rgb": {
    "r": 182,
    "g": 58,
    "b": 47
  },
  "hsl": {
    "h": 4.889,
    "s": 58.952,
    "l": 44.902
  },
  "oklch": {
    "l": 0.52781,
    "c": 0.16198,
    "h": 28.8
  },
  "luminance": 0.13176
}

Semantic roles & 50–950 ramp

primary

#B63A2F

secondary

#79C1C7

accent

#D5E246

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B63A2F

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

Preview Lab → · Contrast checker → · Palette generator →