#A63138#A63138

#A63138 is a mid, vivid red. Relative luminance 0.106; OKLCH L 49.2% C 0.153 H 21.6°. Best body text is #FFFFFF at 6.74:1 contrast (WCAG AA passes).

Color values

HEX#A63138
RGBrgb(166, 49, 56)
HSLhsl(356, 54%, 42%)
HSVhsv(356, 70%, 65%)
CMYKcmyk(0%, 70.5%, 66.3%, 34.9%)
CIE-LABlab(38.88, 48.09, 23.68)
CIE-LCHlch(38.88, 53.61, 26.21°)
OKLaboklab(49.18% 0.1419 0.0561)
OKLCHoklch(49.18% 0.153 21.6)
XYZxyz(17.5398, 10.5917, 4.8614)
Luminance0.1059 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#A63138 #31A69F
analogous
#A63173 #A63138 #A66431
triadic
#A63138 #38A631 #3138A6
tetradic
#A63138 #73A631 #31A69F #6431A6
square
#A63138 #73A631 #31A69F #6431A6
split-complementary
#A63138 #31A664 #3173A6
monochromatic
#471518 #772328 #A63138 #CA4A52 #D87A7F

Accessibility & contrast

On white

6.74
#A63138 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.12
#A63138 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63138
6.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##A63138#FFFFFF#000000##FFFFFF
##A631381.006.743.126.74
#FFFFFF6.741.0021.001.00
#0000003.1221.001.0021.00
##FFFFFF6.741.0021.001.00

Color blindness preview

Protanopia (red-blind)
#514C37
Deuteranopia (green-blind)
#6F6535
Tritanopia (blue-blind)
#B60E35
Achromatopsia (no color)
#5C5C5C

Design tokens & code

CSS
--color: #a63138;
/* rgb */ color: rgb(166, 49, 56);
/* oklch */ color: oklch(49.2% 0.153 21.6);
Tailwind
colors: {
  custom: {
    50: '#c7716e',
    500: '#a63138',
    950: '#000000',
  },
}
SCSS
$custom: #a63138;
$custom-light: #c7716e;
$custom-dark: #000000;
JSON
{
  "hex": "#a63138",
  "rgb": {
    "r": 166,
    "g": 49,
    "b": 56
  },
  "hsl": {
    "h": 356.41,
    "s": 54.419,
    "l": 42.157
  },
  "oklch": {
    "l": 0.49176,
    "c": 0.15255,
    "h": 21.6
  },
  "luminance": 0.10589
}

Semantic roles & 50–950 ramp

primary
#A63138
secondary
#73C0BB
accent
#DED54A
background
#FDF7F6
surface
#FAEDEC
border
#D3C8C7
text
#140807
muted
#837B7A

Preview Lab

Preview with #A63138

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

Preview Lab → · Contrast checker → · Palette generator →

#A63138 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva