#AC3428#AC3428

#AC3428 is a mid, vivid red. Relative luminance 0.114; OKLCH L 50.3% C 0.158 H 29.4°. Best body text is #FFFFFF at 6.41:1 contrast (WCAG AA passes).

Color values

HEX	#AC3428
RGB	rgb(172, 52, 40)
HSL	hsl(5, 62%, 42%)
HSV	hsv(5, 77%, 67%)
CMYK	cmyk(0%, 69.8%, 76.7%, 32.5%)
CIE-LAB	lab(40.22, 48.11, 35.06)
CIE-LCH	lch(40.22, 59.53, 36.08°)
OKLab	oklab(50.31% 0.1378 0.0778)
OKLCH	oklch(50.31% 0.158 29.4)
XYZ	xyz(18.6264, 11.3826, 3.2234)
Luminance	0.1138 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC3428 #28A0AC

analogous

#AC285E #AC3428 #AC7628

triadic

#AC3428 #28AC34 #3428AC

tetradic

#AC3428 #5EAC28 #28A0AC #7628AC

square

#AC3428 #5EAC28 #28A0AC #7628AC

split-complementary

#AC3428 #28AC76 #285EAC

monochromatic

#491611 #7A251C #AC3428 #D24C3F #DE7A71

Accessibility & contrast

On white

6.41

#AC3428 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#AC3428 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC3428

6.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC3428	#FFFFFF	#000000	##FFFFFF
##AC3428	1.00	6.41	3.28	6.41
#FFFFFF	6.41	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#574E26

Deuteranopia (green-blind)

#746823

Tritanopia (blue-blind)

#BD0932

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #ac3428;
/* rgb */ color: rgb(172, 52, 40);
/* oklch */ color: oklch(50.3% 0.158 29.4);

Tailwind

colors: {
  custom: {
    50: '#cd7363',
    500: '#ac3428',
    950: '#000000',
  },
}

SCSS

$custom: #ac3428;
$custom-light: #cd7363;
$custom-dark: #000000;

JSON

{
  "hex": "#ac3428",
  "rgb": {
    "r": 172,
    "g": 52,
    "b": 40
  },
  "hsl": {
    "h": 5.455,
    "s": 62.264,
    "l": 41.569
  },
  "oklch": {
    "l": 0.50307,
    "c": 0.15819,
    "h": 29.4
  },
  "luminance": 0.1138
}

Semantic roles & 50–950 ramp

primary

#AC3428

secondary

#6BBDC5

accent

#D7E542

background

#FDF7F5

surface

#FBEDEA

border

#D4C8C6

text

#150805

muted

#837B79

Preview Lab

Preview with #AC3428

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

Preview Lab → · Contrast checker → · Palette generator →