#AC3521#AC3521

#AC3521 is a mid, vivid red. Relative luminance 0.114; OKLCH L 50.3% C 0.159 H 32.1°. Best body text is #FFFFFF at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#AC3521
RGB	rgb(172, 53, 33)
HSL	hsl(9, 68%, 40%)
HSV	hsv(9, 81%, 67%)
CMYK	cmyk(0%, 69.2%, 80.8%, 32.5%)
CIE-LAB	lab(40.29, 47.45, 38.98)
CIE-LCH	lch(40.29, 61.40, 39.40°)
OKLab	oklab(50.34% 0.1343 0.0842)
OKLCH	oklch(50.34% 0.159 32.1)
XYZ	xyz(18.5630, 11.4295, 2.6672)
Luminance	0.1143 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC3521 #2198AC

analogous

#AC2153 #AC3521 #AC7A21

triadic

#AC3521 #21AC35 #3521AC

tetradic

#AC3521 #53AC21 #2198AC #7A21AC

square

#AC3521 #53AC21 #2198AC #7A21AC

split-complementary

#AC3521 #21AC7A #2153AC

monochromatic

#45150D #792517 #AC3521 #D84A32 #E27866

Accessibility & contrast

On white

6.39

#AC3521 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#AC3521 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC3521

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC3521	#FFFFFF	#000000	##FFFFFF
##AC3521	1.00	6.39	3.29	6.39
#FFFFFF	6.39	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#584E1E

Deuteranopia (green-blind)

#75691C

Tritanopia (blue-blind)

#BE0A31

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #ac3521;
/* rgb */ color: rgb(172, 53, 33);
/* oklch */ color: oklch(50.3% 0.159 32.1);

Tailwind

colors: {
  custom: {
    50: '#cd735e',
    500: '#ac3521',
    950: '#000000',
  },
}

SCSS

$custom: #ac3521;
$custom-light: #cd735e;
$custom-dark: #000000;

JSON

{
  "hex": "#ac3521",
  "rgb": {
    "r": 172,
    "g": 53,
    "b": 33
  },
  "hsl": {
    "h": 8.633,
    "s": 67.805,
    "l": 40.196
  },
  "oklch": {
    "l": 0.50342,
    "c": 0.15852,
    "h": 32.1
  },
  "luminance": 0.11427
}

Semantic roles & 50–950 ramp

primary

#AC3521

secondary

#62B8C7

accent

#D2EB3D

background

#FDF7F5

surface

#FBEDE9

border

#D4C8C5

text

#150904

muted

#837B79

Preview Lab

Preview with #AC3521

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

Preview Lab → · Contrast checker → · Palette generator →