#A81E3A#A81E3A

#A81E3A is a mid, vivid red. Relative luminance 0.096; OKLCH L 47.9% C 0.172 H 16.3°. Best body text is #FFFFFF at 7.21:1 contrast (WCAG AA passes).

Color values

HEX	#A81E3A
RGB	rgb(168, 30, 58)
HSL	hsl(348, 70%, 39%)
HSV	hsv(348, 82%, 66%)
CMYK	cmyk(0%, 82.1%, 65.5%, 34.1%)
CIE-LAB	lab(37.04, 55.15, 20.16)
CIE-LCH	lch(37.04, 58.72, 20.08°)
OKLab	oklab(47.89% 0.1646 0.0483)
OKLCH	oklch(47.89% 0.172 16.3)
XYZ	xyz(17.3784, 9.5616, 4.9327)
Luminance	0.0956 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A81E3A #1EA88C

analogous

#A81E7F #A81E3A #A8471E

triadic

#A81E3A #3AA81E #1E3AA8

tetradic

#A81E3A #7FA81E #1EA88C #471EA8

square

#A81E3A #7FA81E #1EA88C #471EA8

split-complementary

#A81E3A #1EA847 #1E7FA8

monochromatic

#400B16 #741528 #A81E3A #D92A4E #E25E79

Accessibility & contrast

On white

7.21

#A81E3A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#A81E3A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A81E3A

7.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A81E3A	#FFFFFF	#000000	##FFFFFF
##A81E3A	1.00	7.21	2.91	7.21
#FFFFFF	7.21	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#48453A

Deuteranopia (green-blind)

#6A6136

Tritanopia (blue-blind)

#B9002B

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #a81e3a;
/* rgb */ color: rgb(168, 30, 58);
/* oklch */ color: oklch(47.9% 0.172 16.3);

Tailwind

colors: {
  custom: {
    50: '#ca696f',
    500: '#a81e3a',
    950: '#000000',
  },
}

SCSS

$custom: #a81e3a;
$custom-light: #ca696f;
$custom-dark: #000000;

JSON

{
  "hex": "#a81e3a",
  "rgb": {
    "r": 168,
    "g": 30,
    "b": 58
  },
  "hsl": {
    "h": 347.826,
    "s": 69.697,
    "l": 38.824
  },
  "oklch": {
    "l": 0.47891,
    "c": 0.17154,
    "h": 16.3
  },
  "luminance": 0.09559
}

Semantic roles & 50–950 ramp

primary

#A81E3A

secondary

#5BC7B1

accent

#EDC93B

background

#FDF6F6

surface

#FAECEC

border

#D3C7C7

text

#150707

muted

#837A7A

Preview Lab

Preview with #A81E3A

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

Preview Lab → · Contrast checker → · Palette generator →