#AC3138#AC3138

#AC3138 is a mid, vivid red. Relative luminance 0.113; OKLCH L 50.2% C 0.159 H 22.0°. Best body text is #FFFFFF at 6.46:1 contrast (WCAG AA passes).

Color values

HEX	#AC3138
RGB	rgb(172, 49, 56)
HSL	hsl(357, 56%, 43%)
HSV	hsv(357, 72%, 67%)
CMYK	cmyk(0%, 71.5%, 67.4%, 32.5%)
CIE-LAB	lab(40.01, 50.05, 25.32)
CIE-LCH	lch(40.01, 56.09, 26.83°)
OKLab	oklab(50.22% 0.1473 0.0596)
OKLCH	oklch(50.22% 0.159 22)
XYZ	xyz(18.8274, 11.2556, 4.9218)
Luminance	0.1125 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC3138 #31ACA5

analogous

#AC3175 #AC3138 #AC6731

triadic

#AC3138 #38AC31 #3138AC

tetradic

#AC3138 #75AC31 #31ACA5 #6731AC

square

#AC3138 #75AC31 #31ACA5 #6731AC

split-complementary

#AC3138 #31AC67 #3175AC

monochromatic

#4D1619 #7C2328 #AC3138 #CC4E55 #DA7D83

Accessibility & contrast

On white

6.46

#AC3138 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.25

#AC3138 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC3138

6.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC3138	#FFFFFF	#000000	##FFFFFF
##AC3138	1.00	6.46	3.25	6.46
#FFFFFF	6.46	1.00	21.00	1.00
#000000	3.25	21.00	1.00	21.00
##FFFFFF	6.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#534E37

Deuteranopia (green-blind)

#726834

Tritanopia (blue-blind)

#BD0735

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #ac3138;
/* rgb */ color: rgb(172, 49, 56);
/* oklch */ color: oklch(50.2% 0.159 22.0);

Tailwind

colors: {
  custom: {
    50: '#cc726e',
    500: '#ac3138',
    950: '#000000',
  },
}

SCSS

$custom: #ac3138;
$custom-light: #cc726e;
$custom-dark: #000000;

JSON

{
  "hex": "#ac3138",
  "rgb": {
    "r": 172,
    "g": 49,
    "b": 56
  },
  "hsl": {
    "h": 356.585,
    "s": 55.656,
    "l": 43.333
  },
  "oklch": {
    "l": 0.5022,
    "c": 0.1589,
    "h": 22
  },
  "luminance": 0.11253
}

Semantic roles & 50–950 ramp

primary

#AC3138

secondary

#76C3BE

accent

#DFD649

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150807

muted

#837B7A

Preview Lab

Preview with #AC3138

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

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