#A43837#A43837

#A43837 is a mid, vivid red. Relative luminance 0.110; OKLCH L 49.6% C 0.143 H 24.4°. Best body text is #FFFFFF at 6.56:1 contrast (WCAG AA passes).

Color values

HEX	#A43837
RGB	rgb(164, 56, 55)
HSL	hsl(1, 50%, 43%)
HSV	hsv(1, 66%, 64%)
CMYK	cmyk(0%, 65.9%, 66.5%, 35.7%)
CIE-LAB	lab(39.58, 44.42, 25.08)
CIE-LCH	lch(39.58, 51.01, 29.44°)
OKLab	oklab(49.62% 0.1303 0.0592)
OKLCH	oklch(49.62% 0.143 24.4)
XYZ	xyz(17.4154, 10.9991, 4.8197)
Luminance	0.1100 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A43837 #37A3A4

analogous

#A4376D #A43837 #A46E37

triadic

#A43837 #37A438 #3837A4

tetradic

#A43837 #6DA437 #37A3A4 #6E37A4

square

#A43837 #6DA437 #37A3A4 #6E37A4

split-complementary

#A43837 #37A46E #376DA4

monochromatic

#481918 #762828 #A43837 #C55453 #D58281

Accessibility & contrast

On white

6.56

#A43837 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#A43837 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A43837

6.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A43837	#FFFFFF	#000000	##FFFFFF
##A43837	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)

#554F36

Deuteranopia (green-blind)

#706634

Tritanopia (blue-blind)

#B41F39

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #a43837;
/* rgb */ color: rgb(164, 56, 55);
/* oklch */ color: oklch(49.6% 0.143 24.4);

Tailwind

colors: {
  custom: {
    50: '#c6746e',
    500: '#a43837',
    950: '#000000',
  },
}

SCSS

$custom: #a43837;
$custom-light: #c6746e;
$custom-dark: #000000;

JSON

{
  "hex": "#a43837",
  "rgb": {
    "r": 164,
    "g": 56,
    "b": 55
  },
  "hsl": {
    "h": 0.55,
    "s": 49.772,
    "l": 42.941
  },
  "oklch": {
    "l": 0.49622,
    "c": 0.1431,
    "h": 24.4
  },
  "luminance": 0.10997
}

Semantic roles & 50–950 ramp

primary

#A43837

secondary

#79BDBE

accent

#D8D94F

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140907

muted

#837B7A

Preview Lab

Preview with #A43837

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

Preview Lab → · Contrast checker → · Palette generator →