#AC2521#AC2521

#AC2521 is a mid, vivid red. Relative luminance 0.102; OKLCH L 48.8% C 0.172 H 27.6°. Best body text is #FFFFFF at 6.91:1 contrast (WCAG AA passes).

Color values

HEX	#AC2521
RGB	rgb(172, 37, 33)
HSL	hsl(2, 68%, 40%)
HSV	hsv(2, 81%, 67%)
CMYK	cmyk(0%, 78.5%, 80.8%, 32.5%)
CIE-LAB	lab(38.21, 53.21, 36.90)
CIE-LCH	lch(38.21, 64.75, 34.74°)
OKLab	oklab(48.79% 0.1523 0.0796)
OKLCH	oklch(48.79% 0.172 27.6)
XYZ	xyz(17.9515, 10.2065, 2.4634)
Luminance	0.1020 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC2521 #21A8AC

analogous

#AC2162 #AC2521 #AC6B21

triadic

#AC2521 #21AC25 #2521AC

tetradic

#AC2521 #62AC21 #21A8AC #6B21AC

square

#AC2521 #62AC21 #21A8AC #6B21AC

split-complementary

#AC2521 #21AC6B #2162AC

monochromatic

#450F0D #791A17 #AC2521 #D83732 #E26966

Accessibility & contrast

On white

6.91

#AC2521 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.04

#AC2521 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC2521

6.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC2521	#FFFFFF	#000000	##FFFFFF
##AC2521	1.00	6.91	3.04	6.91
#FFFFFF	6.91	1.00	21.00	1.00
#000000	3.04	21.00	1.00	21.00
##FFFFFF	6.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F471F

Deuteranopia (green-blind)

#71641B

Tritanopia (blue-blind)

#BE0026

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #ac2521;
/* rgb */ color: rgb(172, 37, 33);
/* oklch */ color: oklch(48.8% 0.172 27.6);

Tailwind

colors: {
  custom: {
    50: '#ce6c5d',
    500: '#ac2521',
    950: '#000000',
  },
}

SCSS

$custom: #ac2521;
$custom-light: #ce6c5d;
$custom-dark: #000000;

JSON

{
  "hex": "#ac2521",
  "rgb": {
    "r": 172,
    "g": 37,
    "b": 33
  },
  "hsl": {
    "h": 1.727,
    "s": 67.805,
    "l": 40.196
  },
  "oklch": {
    "l": 0.48786,
    "c": 0.1719,
    "h": 27.6
  },
  "luminance": 0.10204
}

Semantic roles & 50–950 ramp

primary

#AC2521

secondary

#62C4C7

accent

#E6EB3D

background

#FEF6F5

surface

#FCECE9

border

#D5C7C5

text

#160804

muted

#847A79

Preview Lab

Preview with #AC2521

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

Preview Lab → · Contrast checker → · Palette generator →