#A91C21#A91C21

#A91C21 is a mid, vivid red. Relative luminance 0.094; OKLCH L 47.6% C 0.175 H 25.7°. Best body text is #FFFFFF at 7.30:1 contrast (WCAG AA passes).

Color values

HEX	#A91C21
RGB	rgb(169, 28, 33)
HSL	hsl(358, 72%, 39%)
HSV	hsv(358, 83%, 66%)
CMYK	cmyk(0%, 83.4%, 80.5%, 33.7%)
CIE-LAB	lab(36.70, 54.85, 35.18)
CIE-LCH	lch(36.70, 65.16, 32.67°)
OKLab	oklab(47.56% 0.1579 0.0761)
OKLCH	oklch(47.56% 0.175 25.7)
XYZ	xyz(17.0541, 9.3781, 2.3508)
Luminance	0.0938 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A91C21 #1CA9A4

analogous

#A91C67 #A91C21 #A95D1C

triadic

#A91C21 #21A91C #1C21A9

tetradic

#A91C21 #67A91C #1CA9A4 #5D1CA9

square

#A91C21 #67A91C #1CA9A4 #5D1CA9

split-complementary

#A91C21 #1CA95D #1C67A9

monochromatic

#400B0C #741317 #A91C21 #DB272D #E45B60

Accessibility & contrast

On white

7.30

#A91C21 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#A91C21 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A91C21

7.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A91C21	#FFFFFF	#000000	##FFFFFF
##A91C21	1.00	7.30	2.87	7.30
#FFFFFF	7.30	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B431F

Deuteranopia (green-blind)

#6D611A

Tritanopia (blue-blind)

#BB0020

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #a91c21;
/* rgb */ color: rgb(169, 28, 33);
/* oklch */ color: oklch(47.6% 0.175 25.7);

Tailwind

colors: {
  custom: {
    50: '#cc685d',
    500: '#a91c21',
    950: '#000000',
  },
}

SCSS

$custom: #a91c21;
$custom-light: #cc685d;
$custom-dark: #000000;

JSON

{
  "hex": "#a91c21",
  "rgb": {
    "r": 169,
    "g": 28,
    "b": 33
  },
  "hsl": {
    "h": 357.872,
    "s": 71.574,
    "l": 38.627
  },
  "oklch": {
    "l": 0.47558,
    "c": 0.17526,
    "h": 25.7
  },
  "luminance": 0.09375
}

Semantic roles & 50–950 ramp

primary

#A91C21

secondary

#59C8C4

accent

#EEE839

background

#FDF6F5

surface

#FBECE9

border

#D4C7C5

text

#150704

muted

#837A79

Preview Lab

Preview with #A91C21

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

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