#A33F21#A33F21

#A33F21 is a mid, vivid red. Relative luminance 0.115; OKLCH L 50.1% C 0.139 H 37.0°. Best body text is #FFFFFF at 6.38:1 contrast (WCAG AA passes).

Color values

HEX#A33F21
RGBrgb(163, 63, 33)
HSLhsl(14, 66%, 38%)
HSVhsv(14, 80%, 64%)
CMYKcmyk(0%, 61.3%, 79.8%, 36.1%)
CIE-LABlab(40.33, 39.76, 38.48)
CIE-LCHlch(40.33, 55.33, 44.06°)
OKLaboklab(50.07% 0.1115 0.0839)
OKLCHoklch(50.07% 0.139 37)
XYZxyz(17.1581, 11.4537, 2.7458)
Luminance0.1145 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#A33F21 #2185A3
analogous
#A32144 #A33F21 #A38021
triadic
#A33F21 #21A33F #3F21A3
tetradic
#A33F21 #44A321 #2185A3 #8021A3
square
#A33F21 #44A321 #2185A3 #8021A3
split-complementary
#A33F21 #21A380 #2144A3
monochromatic
#3D180C #702B17 #A33F21 #D4532D #DF7D60

Accessibility & contrast

On white

6.38
#A33F21 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.29
#A33F21 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A33F21
6.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##A33F21#FFFFFF#000000##FFFFFF
##A33F211.006.383.296.38
#FFFFFF6.381.0021.001.00
#0000003.2921.001.0021.00
##FFFFFF6.381.0021.001.00

Color blindness preview

Protanopia (red-blind)
#5B511D
Deuteranopia (green-blind)
#74671D
Tritanopia (blue-blind)
#B32639
Achromatopsia (no color)
#5F5F5F

Design tokens & code

CSS
--color: #a33f21;
/* rgb */ color: rgb(163, 63, 33);
/* oklch */ color: oklch(50.1% 0.139 37.0);
Tailwind
colors: {
  custom: {
    50: '#c6785e',
    500: '#a33f21',
    950: '#000000',
  },
}
SCSS
$custom: #a33f21;
$custom-light: #c6785e;
$custom-dark: #000000;
JSON
{
  "hex": "#a33f21",
  "rgb": {
    "r": 163,
    "g": 63,
    "b": 33
  },
  "hsl": {
    "h": 13.846,
    "s": 66.327,
    "l": 38.431
  },
  "oklch": {
    "l": 0.50069,
    "c": 0.13948,
    "h": 37
  },
  "luminance": 0.11451
}

Semantic roles & 50–950 ramp

primary
#A33F21
secondary
#5CACC3
accent
#C2E93F
background
#FDF7F5
surface
#FAEDE9
border
#D3C8C5
text
#140904
muted
#837B79

Preview Lab

Preview with #A33F21

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

Preview Lab → · Contrast checker → · Palette generator →

#A33F21 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva