#A91C37#A91C37

#A91C37 is a mid, vivid red. Relative luminance 0.095; OKLCH L 47.9% C 0.174 H 17.5°. Best body text is #FFFFFF at 7.22:1 contrast (WCAG AA passes).

Color values

HEX	#A91C37
RGB	rgb(169, 28, 55)
HSL	hsl(349, 72%, 39%)
HSV	hsv(349, 83%, 66%)
CMYK	cmyk(0%, 83.4%, 67.5%, 33.7%)
CIE-LAB	lab(37.01, 55.78, 22.07)
CIE-LCH	lch(37.01, 59.99, 21.58°)
OKLab	oklab(47.89% 0.1659 0.0522)
OKLCH	oklch(47.89% 0.174 17.5)
XYZ	xyz(17.4690, 9.5441, 4.5361)
Luminance	0.0954 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A91C37 #1CA98E

analogous

#A91C7D #A91C37 #A9471C

triadic

#A91C37 #37A91C #1C37A9

tetradic

#A91C37 #7DA91C #1CA98E #471CA9

square

#A91C37 #7DA91C #1CA98E #471CA9

split-complementary

#A91C37 #1CA947 #1C7DA9

monochromatic

#400B15 #741326 #A91C37 #DB2749 #E45B76

Accessibility & contrast

On white

7.22

#A91C37 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#A91C37 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A91C37

7.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A91C37	#FFFFFF	#000000	##FFFFFF
##A91C37	1.00	7.22	2.91	7.22
#FFFFFF	7.22	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#484437

Deuteranopia (green-blind)

#6B6133

Tritanopia (blue-blind)

#BA0028

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #a91c37;
/* rgb */ color: rgb(169, 28, 55);
/* oklch */ color: oklch(47.9% 0.174 17.5);

Tailwind

colors: {
  custom: {
    50: '#cb696d',
    500: '#a91c37',
    950: '#000000',
  },
}

SCSS

$custom: #a91c37;
$custom-light: #cb696d;
$custom-dark: #000000;

JSON

{
  "hex": "#a91c37",
  "rgb": {
    "r": 169,
    "g": 28,
    "b": 55
  },
  "hsl": {
    "h": 348.511,
    "s": 71.574,
    "l": 38.627
  },
  "oklch": {
    "l": 0.47886,
    "c": 0.17387,
    "h": 17.5
  },
  "luminance": 0.09541
}

Semantic roles & 50–950 ramp

primary

#A91C37

secondary

#59C8B3

accent

#EECC39

background

#FDF6F6

surface

#FAECEB

border

#D3C7C6

text

#150707

muted

#837A7A

Preview Lab

Preview with #A91C37

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

Preview Lab → · Contrast checker → · Palette generator →