#AC4040#AC4040

#AC4040 is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.1% C 0.142 H 23.4°. Best body text is #FFFFFF at 5.90:1 contrast (WCAG AA passes).

Color values

HEX	#AC4040
RGB	rgb(172, 64, 64)
HSL	hsl(0, 46%, 46%)
HSV	hsv(0, 63%, 67%)
CMYK	cmyk(0%, 62.8%, 62.8%, 32.5%)
CIE-LAB	lab(42.48, 44.22, 23.54)
CIE-LCH	lch(42.48, 50.10, 28.03°)
OKLab	oklab(52.11% 0.1304 0.0565)
OKLCH	oklch(52.11% 0.142 23.4)
XYZ	xyz(19.7740, 12.8102, 6.2809)
Luminance	0.1281 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC4040 #40ACAC

analogous

#AC4076 #AC4040 #AC7640

triadic

#AC4040 #40AC40 #4040AC

tetradic

#AC4040 #76AC40 #40ACAC #7640AC

square

#AC4040 #76AC40 #40ACAC #7640AC

split-complementary

#AC4040 #40AC76 #4076AC

monochromatic

#531F1F #7F2F2F #AC4040 #C56464 #D69191

Accessibility & contrast

On white

5.90

#AC4040 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#AC4040 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC4040

5.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC4040	#FFFFFF	#000000	##FFFFFF
##AC4040	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)

#5C563F

Deuteranopia (green-blind)

#776D3D

Tritanopia (blue-blind)

#BC2A41

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #ac4040;
/* rgb */ color: rgb(172, 64, 64);
/* oklch */ color: oklch(52.1% 0.142 23.4);

Tailwind

colors: {
  custom: {
    50: '#cb7a74',
    500: '#ac4040',
    950: '#000000',
  },
}

SCSS

$custom: #ac4040;
$custom-light: #cb7a74;
$custom-dark: #000000;

JSON

{
  "hex": "#ac4040",
  "rgb": {
    "r": 172,
    "g": 64,
    "b": 64
  },
  "hsl": {
    "h": 0,
    "s": 45.763,
    "l": 46.275
  },
  "oklch": {
    "l": 0.52111,
    "c": 0.14213,
    "h": 23.4
  },
  "luminance": 0.12808
}

Semantic roles & 50–950 ramp

primary

#AC4040

secondary

#87C1C1

accent

#D5D552

background

#FDF7F7

surface

#FAEEED

border

#D3C9C8

text

#140908

muted

#837B7B

Preview Lab

Preview with #AC4040

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

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