#AA3721#AA3721

#AA3721 is a mid, vivid red. Relative luminance 0.114; OKLCH L 50.2% C 0.155 H 32.9°. Best body text is #FFFFFF at 6.41:1 contrast (WCAG AA passes).

Color values

HEX#AA3721
RGBrgb(170, 55, 33)
HSLhsl(10, 67%, 40%)
HSVhsv(10, 81%, 67%)
CMYKcmyk(0%, 67.6%, 80.6%, 33.3%)
CIE-LABlab(40.23, 45.92, 38.79)
CIE-LCHlch(40.23, 60.11, 40.19°)
OKLaboklab(50.23% 0.1298 0.084)
OKLCHoklch(50.23% 0.155 32.9)
XYZxyz(18.2203, 11.3909, 2.6778)
Luminance0.1139 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#AA3721 #2194AA
analogous
#AA2150 #AA3721 #AA7C21
triadic
#AA3721 #21AA37 #3721AA
tetradic
#AA3721 #50AA21 #2194AA #7C21AA
square
#AA3721 #50AA21 #2194AA #7C21AA
split-complementary
#AA3721 #21AA7C #2150AA
monochromatic
#43160D #772617 #AA3721 #D74C31 #E17864

Accessibility & contrast

On white

6.41
#AA3721 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.28
#AA3721 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AA3721
6.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##AA3721#FFFFFF#000000##FFFFFF
##AA37211.006.413.286.41
#FFFFFF6.411.0021.001.00
#0000003.2821.001.0021.00
##FFFFFF6.411.0021.001.00

Color blindness preview

Protanopia (red-blind)
#584F1D
Deuteranopia (green-blind)
#75681C
Tritanopia (blue-blind)
#BB1333
Achromatopsia (no color)
#5F5F5F

Design tokens & code

CSS
--color: #aa3721;
/* rgb */ color: rgb(170, 55, 33);
/* oklch */ color: oklch(50.2% 0.155 32.9);
Tailwind
colors: {
  custom: {
    50: '#cc745e',
    500: '#aa3721',
    950: '#000000',
  },
}
SCSS
$custom: #aa3721;
$custom-light: #cc745e;
$custom-dark: #000000;
JSON
{
  "hex": "#aa3721",
  "rgb": {
    "r": 170,
    "g": 55,
    "b": 33
  },
  "hsl": {
    "h": 9.635,
    "s": 67.488,
    "l": 39.804
  },
  "oklch": {
    "l": 0.50226,
    "c": 0.15458,
    "h": 32.9
  },
  "luminance": 0.11388
}

Semantic roles & 50–950 ramp

primary
#AA3721
secondary
#61B6C6
accent
#CFEA3D
background
#FDF7F5
surface
#FBEDE9
border
#D4C8C5
text
#150904
muted
#837B79

Preview Lab

Preview with #AA3721

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

Preview Lab → · Contrast checker → · Palette generator →

#AA3721 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva