#AC2B23#AC2B23

#AC2B23 is a mid, vivid red. Relative luminance 0.106; OKLCH L 49.3% C 0.167 H 28.4°. Best body text is #FFFFFF at 6.72:1 contrast (WCAG AA passes).

Color values

HEX#AC2B23
RGBrgb(172, 43, 35)
HSLhsl(4, 66%, 41%)
HSVhsv(4, 80%, 67%)
CMYKcmyk(0%, 75%, 79.7%, 32.5%)
CIE-LABlab(38.94, 51.30, 36.52)
CIE-LCHlch(38.94, 62.97, 35.45°)
OKLaboklab(49.33% 0.1468 0.0795)
OKLCHoklch(49.33% 0.167 28.4)
XYZxyz(18.1827, 10.6226, 2.6828)
Luminance0.1062 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#AC2B23 #23A4AC
analogous
#AC235F #AC2B23 #AC7023
triadic
#AC2B23 #23AC2B #2B23AC
tetradic
#AC2B23 #5FAC23 #23A4AC #7023AC
square
#AC2B23 #5FAC23 #23A4AC #7023AC
split-complementary
#AC2B23 #23AC70 #235FAC
monochromatic
#46120E #791E19 #AC2B23 #D63F36 #E07069

Accessibility & contrast

On white

6.72
#AC2B23 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.12
#AC2B23 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC2B23
6.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##AC2B23#FFFFFF#000000##FFFFFF
##AC2B231.006.723.126.72
#FFFFFF6.721.0021.001.00
#0000003.1221.001.0021.00
##FFFFFF6.721.0021.001.00

Color blindness preview

Protanopia (red-blind)
#524A21
Deuteranopia (green-blind)
#72661D
Tritanopia (blue-blind)
#BE002B
Achromatopsia (no color)
#5C5C5C

Design tokens & code

CSS
--color: #ac2b23;
/* rgb */ color: rgb(172, 43, 35);
/* oklch */ color: oklch(49.3% 0.167 28.4);
Tailwind
colors: {
  custom: {
    50: '#ce6f5f',
    500: '#ac2b23',
    950: '#000000',
  },
}
SCSS
$custom: #ac2b23;
$custom-light: #ce6f5f;
$custom-dark: #000000;
JSON
{
  "hex": "#ac2b23",
  "rgb": {
    "r": 172,
    "g": 43,
    "b": 35
  },
  "hsl": {
    "h": 3.504,
    "s": 66.184,
    "l": 40.588
  },
  "oklch": {
    "l": 0.49333,
    "c": 0.16689,
    "h": 28.4
  },
  "luminance": 0.1062
}

Semantic roles & 50–950 ramp

primary
#AC2B23
secondary
#64C1C6
accent
#DFE93F
background
#FDF7F5
surface
#FBEDE9
border
#D4C8C5
text
#150804
muted
#837B79

Preview Lab

Preview with #AC2B23

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

Preview Lab → · Contrast checker → · Palette generator →

#AC2B23 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva