#A53721#A53721

#A53721 is a mid, vivid red. Relative luminance 0.108; OKLCH L 49.4% C 0.149 H 33.2°. Best body text is #FFFFFF at 6.63:1 contrast (WCAG AA passes).

Color values

HEX#A53721
RGBrgb(165, 55, 33)
HSLhsl(10, 67%, 39%)
HSVhsv(10, 80%, 65%)
CMYKcmyk(0%, 66.7%, 80%, 35.3%)
CIE-LABlab(39.32, 44.16, 37.57)
CIE-LCHlch(39.32, 57.98, 40.39°)
OKLaboklab(49.37% 0.1248 0.0817)
OKLCHoklch(49.37% 0.149 33.2)
XYZxyz(17.1597, 10.8440, 2.6281)
Luminance0.1084 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#A53721 #218FA5
analogous
#A5214D #A53721 #A57921
triadic
#A53721 #21A537 #3721A5
tetradic
#A53721 #4DA521 #218FA5 #7921A5
square
#A53721 #4DA521 #218FA5 #7921A5
split-complementary
#A53721 #21A579 #214DA5
monochromatic
#3F150D #722617 #A53721 #D54A2E #DF7661

Accessibility & contrast

On white

6.63
#A53721 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.17
#A53721 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A53721
6.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##A53721#FFFFFF#000000##FFFFFF
##A537211.006.633.176.63
#FFFFFF6.631.0021.001.00
#0000003.1721.001.0021.00
##FFFFFF6.631.0021.001.00

Color blindness preview

Protanopia (red-blind)
#574D1E
Deuteranopia (green-blind)
#72661C
Tritanopia (blue-blind)
#B61733
Achromatopsia (no color)
#5D5D5D

Design tokens & code

CSS
--color: #a53721;
/* rgb */ color: rgb(165, 55, 33);
/* oklch */ color: oklch(49.4% 0.149 33.2);
Tailwind
colors: {
  custom: {
    50: '#c8745e',
    500: '#a53721',
    950: '#000000',
  },
}
SCSS
$custom: #a53721;
$custom-light: #c8745e;
$custom-dark: #000000;
JSON
{
  "hex": "#a53721",
  "rgb": {
    "r": 165,
    "g": 55,
    "b": 33
  },
  "hsl": {
    "h": 10,
    "s": 66.667,
    "l": 38.824
  },
  "oklch": {
    "l": 0.49369,
    "c": 0.14921,
    "h": 33.2
  },
  "luminance": 0.10842
}

Semantic roles & 50–950 ramp

primary
#A53721
secondary
#5EB3C4
accent
#CDEA3E
background
#FDF7F5
surface
#FAEDE9
border
#D3C8C5
text
#150804
muted
#837B79

Preview Lab

Preview with #A53721

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

Preview Lab → · Contrast checker → · Palette generator →

#A53721 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva