#A43740#A43740

#A43740 is a mid, vivid red. Relative luminance 0.110; OKLCH L 49.7% C 0.143 H 19.3°. Best body text is #FFFFFF at 6.56:1 contrast (WCAG AA passes).

Color values

HEX	#A43740
RGB	rgb(164, 55, 64)
HSL	hsl(355, 50%, 43%)
HSV	hsv(355, 66%, 64%)
CMYK	cmyk(0%, 66.5%, 61%, 35.7%)
CIE-LAB	lab(39.58, 45.45, 19.52)
CIE-LCH	lch(39.58, 49.47, 23.24°)
OKLab	oklab(49.67% 0.1353 0.0475)
OKLCH	oklch(49.67% 0.143 19.3)
XYZ	xyz(17.6031, 10.9975, 6.0453)
Luminance	0.1100 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A43740 #37A49B

analogous

#A43776 #A43740 #A46437

triadic

#A43740 #40A437 #3740A4

tetradic

#A43740 #76A437 #37A49B #6437A4

square

#A43740 #76A437 #37A49B #6437A4

split-complementary

#A43740 #37A464 #3776A4

monochromatic

#48181C #76282E #A43740 #C5535C #D58188

Accessibility & contrast

On white

6.56

#A43740 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#A43740 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A43740

6.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A43740	#FFFFFF	#000000	##FFFFFF
##A43740	1.00	6.56	3.20	6.56
#FFFFFF	6.56	1.00	21.00	1.00
#000000	3.20	21.00	1.00	21.00
##FFFFFF	6.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#534F40

Deuteranopia (green-blind)

#6F663D

Tritanopia (blue-blind)

#B41F3B

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #a43740;
/* rgb */ color: rgb(164, 55, 64);
/* oklch */ color: oklch(49.7% 0.143 19.3);

Tailwind

colors: {
  custom: {
    50: '#c57474',
    500: '#a43740',
    950: '#000000',
  },
}

SCSS

$custom: #a43740;
$custom-light: #c57474;
$custom-dark: #000000;

JSON

{
  "hex": "#a43740",
  "rgb": {
    "r": 164,
    "g": 55,
    "b": 64
  },
  "hsl": {
    "h": 355.046,
    "s": 49.772,
    "l": 42.941
  },
  "oklch": {
    "l": 0.49671,
    "c": 0.14337,
    "h": 19.3
  },
  "luminance": 0.10995
}

Semantic roles & 50–950 ramp

primary

#A43740

secondary

#79BEB8

accent

#D9CE4F

background

#FCF7F7

surface

#F9EDED

border

#D2C8C8

text

#140908

muted

#827B7B

Preview Lab

Preview with #A43740

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

Preview Lab → · Contrast checker → · Palette generator →