#A43728#A43728

#A43728 is a mid, vivid red. Relative luminance 0.108; OKLCH L 49.3% C 0.147 H 30.7°. Best body text is #FFFFFF at 6.65:1 contrast (WCAG AA passes).

Color values

HEX#A43728
RGBrgb(164, 55, 40)
HSLhsl(7, 61%, 40%)
HSVhsv(7, 76%, 64%)
CMYKcmyk(0%, 66.5%, 75.6%, 35.7%)
CIE-LABlab(39.21, 44.08, 33.53)
CIE-LCHlch(39.21, 55.39, 37.26°)
OKLaboklab(49.28% 0.1261 0.075)
OKLCHoklch(49.28% 0.147 30.7)
XYZxyz(17.0609, 10.7806, 3.1896)
Luminance0.1078 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#A43728 #2895A4
analogous
#A42857 #A43728 #A47528
triadic
#A43728 #28A437 #3728A4
tetradic
#A43728 #57A428 #2895A4 #7528A4
square
#A43728 #57A428 #2895A4 #7528A4
split-complementary
#A43728 #28A475 #2857A4
monochromatic
#421610 #73271C #A43728 #CF4C3A #DB796B

Accessibility & contrast

On white

6.65
#A43728 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.16
#A43728 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A43728
6.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##A43728#FFFFFF#000000##FFFFFF
##A437281.006.653.166.65
#FFFFFF6.651.0021.001.00
#0000003.1621.001.0021.00
##FFFFFF6.651.0021.001.00

Color blindness preview

Protanopia (red-blind)
#564D26
Deuteranopia (green-blind)
#716524
Tritanopia (blue-blind)
#B51934
Achromatopsia (no color)
#5C5C5C

Design tokens & code

CSS
--color: #a43728;
/* rgb */ color: rgb(164, 55, 40);
/* oklch */ color: oklch(49.3% 0.147 30.7);
Tailwind
colors: {
  custom: {
    50: '#c77463',
    500: '#a43728',
    950: '#000000',
  },
}
SCSS
$custom: #a43728;
$custom-light: #c77463;
$custom-dark: #000000;
JSON
{
  "hex": "#a43728",
  "rgb": {
    "r": 164,
    "g": 55,
    "b": 40
  },
  "hsl": {
    "h": 7.258,
    "s": 60.784,
    "l": 40
  },
  "oklch": {
    "l": 0.49277,
    "c": 0.14671,
    "h": 30.7
  },
  "luminance": 0.10778
}

Semantic roles & 50–950 ramp

primary
#A43728
secondary
#66B6C1
accent
#D1E444
background
#FDF7F5
surface
#FAEDEA
border
#D3C8C6
text
#140805
muted
#837B79

Preview Lab

Preview with #A43728

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

Preview Lab → · Contrast checker → · Palette generator →

#A43728 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva