#AC3743#AC3743

#AC3743 is a mid, vivid red. Relative luminance 0.119; OKLCH L 51.1% C 0.152 H 18.6°. Best body text is #FFFFFF at 6.21:1 contrast (WCAG AA passes).

Color values

HEX	#AC3743
RGB	rgb(172, 55, 67)
HSL	hsl(354, 52%, 45%)
HSV	hsv(354, 68%, 67%)
CMYK	cmyk(0%, 68%, 61%, 32.5%)
CIE-LAB	lab(41.07, 48.35, 19.89)
CIE-LCH	lch(41.07, 52.28, 22.36°)
OKLab	oklab(51.08% 0.1441 0.0484)
OKLCH	oklch(51.08% 0.152 18.6)
XYZ	xyz(19.3944, 11.9110, 6.5869)
Luminance	0.1191 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC3743 #37ACA0

analogous

#AC377E #AC3743 #AC6637

triadic

#AC3743 #43AC37 #3743AC

tetradic

#AC3743 #7EAC37 #37ACA0 #6637AC

square

#AC3743 #7EAC37 #37ACA0 #6637AC

split-complementary

#AC3743 #37AC66 #377EAC

monochromatic

#4F191F #7E2831 #AC3743 #C95763 #D8858E

Accessibility & contrast

On white

6.21

#AC3743 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.38

#AC3743 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC3743

6.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC3743	#FFFFFF	#000000	##FFFFFF
##AC3743	1.00	6.21	3.38	6.21
#FFFFFF	6.21	1.00	21.00	1.00
#000000	3.38	21.00	1.00	21.00
##FFFFFF	6.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#555143

Deuteranopia (green-blind)

#736A40

Tritanopia (blue-blind)

#BC1C3C

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #ac3743;
/* rgb */ color: rgb(172, 55, 67);
/* oklch */ color: oklch(51.1% 0.152 18.6);

Tailwind

colors: {
  custom: {
    50: '#cb7577',
    500: '#ac3743',
    950: '#000000',
  },
}

SCSS

$custom: #ac3743;
$custom-light: #cb7577;
$custom-dark: #000000;

JSON

{
  "hex": "#ac3743",
  "rgb": {
    "r": 172,
    "g": 55,
    "b": 67
  },
  "hsl": {
    "h": 353.846,
    "s": 51.542,
    "l": 44.51
  },
  "oklch": {
    "l": 0.51079,
    "c": 0.15199,
    "h": 18.6
  },
  "luminance": 0.11908
}

Semantic roles & 50–950 ramp

primary

#AC3743

secondary

#7DC2BB

accent

#DBCC4D

background

#FDF7F7

surface

#FAEDED

border

#D3C8C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #AC3743

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

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