#AC403F#AC403F

#AC403F is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.1% C 0.142 H 23.9°. Best body text is #FFFFFF at 5.90:1 contrast (WCAG AA passes).

Color values

HEX	#AC403F
RGB	rgb(172, 64, 63)
HSL	hsl(1, 46%, 46%)
HSV	hsv(1, 63%, 67%)
CMYK	cmyk(0%, 62.8%, 63.4%, 32.5%)
CIE-LAB	lab(42.46, 44.15, 24.13)
CIE-LCH	lch(42.46, 50.31, 28.66°)
OKLab	oklab(52.09% 0.13 0.0577)
OKLCH	oklch(52.09% 0.142 23.9)
XYZ	xyz(19.7458, 12.7990, 6.1323)
Luminance	0.1280 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC403F #3FABAC

analogous

#AC3F74 #AC403F #AC763F

triadic

#AC403F #3FAC40 #403FAC

tetradic

#AC403F #74AC3F #3FABAC #763FAC

square

#AC403F #74AC3F #3FABAC #763FAC

split-complementary

#AC403F #3FAC76 #3F74AC

monochromatic

#521F1E #7F2F2F #AC403F #C66363 #D6908F

Accessibility & contrast

On white

5.90

#AC403F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#AC403F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC403F

5.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC403F	#FFFFFF	#000000	##FFFFFF
##AC403F	1.00	5.90	3.56	5.90
#FFFFFF	5.90	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C563E

Deuteranopia (green-blind)

#776D3C

Tritanopia (blue-blind)

#BC2A41

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #ac403f;
/* rgb */ color: rgb(172, 64, 63);
/* oklch */ color: oklch(52.1% 0.142 23.9);

Tailwind

colors: {
  custom: {
    50: '#cb7a74',
    500: '#ac403f',
    950: '#000000',
  },
}

SCSS

$custom: #ac403f;
$custom-light: #cb7a74;
$custom-dark: #000000;

JSON

{
  "hex": "#ac403f",
  "rgb": {
    "r": 172,
    "g": 64,
    "b": 63
  },
  "hsl": {
    "h": 0.55,
    "s": 46.383,
    "l": 46.078
  },
  "oklch": {
    "l": 0.52093,
    "c": 0.14226,
    "h": 23.9
  },
  "luminance": 0.12796
}

Semantic roles & 50–950 ramp

primary

#AC403F

secondary

#86C1C1

accent

#D5D652

background

#FDF7F7

surface

#FAEEED

border

#D3C9C8

text

#140908

muted

#837B7B

Preview Lab

Preview with #AC403F

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

Preview Lab → · Contrast checker → · Palette generator →