#AC403B#AC403B

#AC403B is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.0% C 0.143 H 25.9°. Best body text is #FFFFFF at 5.91:1 contrast (WCAG AA passes).

Color values

HEX	#AC403B
RGB	rgb(172, 64, 59)
HSL	hsl(3, 49%, 45%)
HSV	hsv(3, 66%, 67%)
CMYK	cmyk(0%, 62.8%, 65.7%, 32.5%)
CIE-LAB	lab(42.39, 43.90, 26.46)
CIE-LCH	lch(42.39, 51.25, 31.08°)
OKLab	oklab(52.02% 0.1285 0.0625)
OKLCH	oklch(52.02% 0.143 25.9)
XYZ	xyz(19.6380, 12.7559, 5.5649)
Luminance	0.1275 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC403B #3BA7AC

analogous

#AC3B6E #AC403B #AC783B

triadic

#AC403B #3BAC40 #403BAC

tetradic

#AC403B #6EAC3B #3BA7AC #783BAC

square

#AC403B #6EAC3B #3BA7AC #783BAC

split-complementary

#AC403B #3BAC78 #3B6EAC

monochromatic

#511E1C #7E2F2B #AC403B #C7625D #D78E8A

Accessibility & contrast

On white

5.91

#AC403B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#AC403B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC403B

5.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC403B	#FFFFFF	#000000	##FFFFFF
##AC403B	1.00	5.91	3.55	5.91
#FFFFFF	5.91	1.00	21.00	1.00
#000000	3.55	21.00	1.00	21.00
##FFFFFF	5.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C553A

Deuteranopia (green-blind)

#776D38

Tritanopia (blue-blind)

#BD2940

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #ac403b;
/* rgb */ color: rgb(172, 64, 59);
/* oklch */ color: oklch(52.0% 0.143 25.9);

Tailwind

colors: {
  custom: {
    50: '#cb7a71',
    500: '#ac403b',
    950: '#000000',
  },
}

SCSS

$custom: #ac403b;
$custom-light: #cb7a71;
$custom-dark: #000000;

JSON

{
  "hex": "#ac403b",
  "rgb": {
    "r": 172,
    "g": 64,
    "b": 59
  },
  "hsl": {
    "h": 2.655,
    "s": 48.918,
    "l": 45.294
  },
  "oklch": {
    "l": 0.52022,
    "c": 0.14284,
    "h": 25.9
  },
  "luminance": 0.12753
}

Semantic roles & 50–950 ramp

primary

#AC403B

secondary

#81BFC1

accent

#D2D84F

background

#FDF7F6

surface

#FAEEEC

border

#D3C9C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #AC403B

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

Preview Lab → · Contrast checker → · Palette generator →