#AC3437#AC3437

#AC3437 is a mid, vivid red. Relative luminance 0.115; OKLCH L 50.5% C 0.156 H 23.4°. Best body text is #FFFFFF at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#AC3437
RGB	rgb(172, 52, 55)
HSL	hsl(359, 54%, 44%)
HSV	hsv(359, 70%, 67%)
CMYK	cmyk(0%, 69.8%, 68%, 32.5%)
CIE-LAB	lab(40.42, 48.82, 26.44)
CIE-LCH	lch(40.42, 55.52, 28.44°)
OKLab	oklab(50.52% 0.1432 0.0619)
OKLCH	oklch(50.52% 0.156 23.4)
XYZ	xyz(18.9328, 11.5052, 4.8375)
Luminance	0.1150 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC3437 #34ACA9

analogous

#AC3473 #AC3437 #AC6D34

triadic

#AC3437 #37AC34 #3437AC

tetradic

#AC3437 #73AC34 #34ACA9 #6D34AC

square

#AC3437 #73AC34 #34ACA9 #6D34AC

split-complementary

#AC3437 #34AC6D #3473AC

monochromatic

#4E1819 #7D2628 #AC3437 #CB5255 #D98184

Accessibility & contrast

On white

6.36

#AC3437 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#AC3437 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC3437

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC3437	#FFFFFF	#000000	##FFFFFF
##AC3437	1.00	6.36	3.30	6.36
#FFFFFF	6.36	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#554F36

Deuteranopia (green-blind)

#736933

Tritanopia (blue-blind)

#BD1036

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #ac3437;
/* rgb */ color: rgb(172, 52, 55);
/* oklch */ color: oklch(50.5% 0.156 23.4);

Tailwind

colors: {
  custom: {
    50: '#cc736e',
    500: '#ac3437',
    950: '#000000',
  },
}

SCSS

$custom: #ac3437;
$custom-light: #cc736e;
$custom-dark: #000000;

JSON

{
  "hex": "#ac3437",
  "rgb": {
    "r": 172,
    "g": 52,
    "b": 55
  },
  "hsl": {
    "h": 358.5,
    "s": 53.571,
    "l": 43.922
  },
  "oklch": {
    "l": 0.50522,
    "c": 0.15602,
    "h": 23.4
  },
  "luminance": 0.11502
}

Semantic roles & 50–950 ramp

primary

#AC3437

secondary

#79C2C0

accent

#DDD94B

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#150907

muted

#837B7A

Preview Lab

Preview with #AC3437

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

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