#B43A31#B43A31

#B43A31 is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.5% C 0.160 H 28.1°. Best body text is #FFFFFF at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#B43A31
RGB	rgb(180, 58, 49)
HSL	hsl(4, 57%, 45%)
HSV	hsv(4, 73%, 71%)
CMYK	cmyk(0%, 67.8%, 72.8%, 29.4%)
CIE-LAB	lab(42.69, 48.76, 33.06)
CIE-LCH	lch(42.69, 58.91, 34.14°)
OKLab	oklab(52.47% 0.1407 0.075)
OKLCH	oklch(52.47% 0.16 28.1)
XYZ	xyz(20.8921, 12.9542, 4.3054)
Luminance	0.1295 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43A31 #31ABB4

analogous

#B4316A #B43A31 #B47B31

triadic

#B43A31 #31B43A #3A31B4

tetradic

#B43A31 #6AB431 #31ABB4 #7B31B4

square

#B43A31 #6AB431 #31ABB4 #7B31B4

split-complementary

#B43A31 #31B47B #316AB4

monochromatic

#541B17 #842A24 #B43A31 #D05B52 #DD8982

Accessibility & contrast

On white

5.85

#B43A31 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#B43A31 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43A31

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43A31	#FFFFFF	#000000	##FFFFFF
##B43A31	1.00	5.85	3.59	5.85
#FFFFFF	5.85	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C542F

Deuteranopia (green-blind)

#7B6F2D

Tritanopia (blue-blind)

#C61639

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b43a31;
/* rgb */ color: rgb(180, 58, 49);
/* oklch */ color: oklch(52.5% 0.160 28.1);

Tailwind

colors: {
  custom: {
    50: '#d27769',
    500: '#b43a31',
    950: '#000000',
  },
}

SCSS

$custom: #b43a31;
$custom-light: #d27769;
$custom-dark: #000000;

JSON

{
  "hex": "#b43a31",
  "rgb": {
    "r": 180,
    "g": 58,
    "b": 49
  },
  "hsl": {
    "h": 4.122,
    "s": 57.205,
    "l": 44.902
  },
  "oklch": {
    "l": 0.52468,
    "c": 0.1595,
    "h": 28.1
  },
  "luminance": 0.12951
}

Semantic roles & 50–950 ramp

primary

#B43A31

secondary

#7BC1C6

accent

#D6E047

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B43A31

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

Preview Lab → · Contrast checker → · Palette generator →