#B43940#B43940

#B43940 is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.6% C 0.159 H 21.3°. Best body text is #FFFFFF at 5.83:1 contrast (WCAG AA passes).

Color values

HEX	#B43940
RGB	rgb(180, 57, 64)
HSL	hsl(357, 52%, 46%)
HSV	hsv(357, 68%, 71%)
CMYK	cmyk(0%, 68.3%, 64.4%, 29.4%)
CIE-LAB	lab(42.77, 49.98, 24.20)
CIE-LCH	lch(42.77, 55.54, 25.84°)
OKLab	oklab(52.6% 0.1477 0.0577)
OKLCH	oklch(52.6% 0.159 21.3)
XYZ	xyz(21.2131, 13.0027, 6.2423)
Luminance	0.1300 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43940 #39B4AD

analogous

#B4397E #B43940 #B47039

triadic

#B43940 #40B439 #3940B4

tetradic

#B43940 #7EB439 #39B4AD #7039B4

square

#B43940 #7EB439 #39B4AD #7039B4

split-complementary

#B43940 #39B470 #397EB4

monochromatic

#571C1F #862A2F #B43940 #CC5E64 #DB8D91

Accessibility & contrast

On white

5.83

#B43940 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#B43940 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43940

5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43940	#FFFFFF	#000000	##FFFFFF
##B43940	1.00	5.83	3.60	5.83
#FFFFFF	5.83	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A543F

Deuteranopia (green-blind)

#796F3D

Tritanopia (blue-blind)

#C5193D

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b43940;
/* rgb */ color: rgb(180, 57, 64);
/* oklch */ color: oklch(52.6% 0.159 21.3);

Tailwind

colors: {
  custom: {
    50: '#d17774',
    500: '#b43940',
    950: '#000000',
  },
}

SCSS

$custom: #b43940;
$custom-light: #d17774;
$custom-dark: #000000;

JSON

{
  "hex": "#b43940",
  "rgb": {
    "r": 180,
    "g": 57,
    "b": 64
  },
  "hsl": {
    "h": 356.585,
    "s": 51.899,
    "l": 46.471
  },
  "oklch": {
    "l": 0.52595,
    "c": 0.15858,
    "h": 21.3
  },
  "luminance": 0.13
}

Semantic roles & 50–950 ramp

primary

#B43940

secondary

#83C5C2

accent

#DBD34C

background

#FDF7F7

surface

#FBEEED

border

#D4C9C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B43940

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

Preview Lab → · Contrast checker → · Palette generator →