#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
RGBrgb(164, 55, 64)
HSLhsl(355, 50%, 43%)
HSVhsv(355, 66%, 64%)
CMYKcmyk(0%, 66.5%, 61%, 35.7%)
CIE-LABlab(39.58, 45.45, 19.52)
CIE-LCHlch(39.58, 49.47, 23.24°)
OKLaboklab(49.67% 0.1353 0.0475)
OKLCHoklch(49.67% 0.143 19.3)
XYZxyz(17.6031, 10.9975, 6.0453)
Luminance0.1100 (WCAG relative)
Temperaturewarm
Familyred

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
##A437401.006.563.206.56
#FFFFFF6.561.0021.001.00
#0000003.2021.001.0021.00
##FFFFFF6.561.0021.001.00

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 →

#A43740 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva