#A3273B#A3273B

#A3273B is a mid, vivid red. Relative luminance 0.096; OKLCH L 47.7% C 0.159 H 17.0°. Best body text is #FFFFFF at 7.22:1 contrast (WCAG AA passes).

Color values

HEX	#A3273B
RGB	rgb(163, 39, 59)
HSL	hsl(350, 61%, 40%)
HSV	hsv(350, 76%, 64%)
CMYK	cmyk(0%, 76.1%, 63.8%, 36.1%)
CIE-LAB	lab(37.03, 51.01, 19.31)
CIE-LCH	lch(37.03, 54.55, 20.74°)
OKLab	oklab(47.71% 0.1522 0.0466)
OKLCH	oklch(47.71% 0.159 17)
XYZ	xyz(16.6209, 9.5558, 5.1061)
Luminance	0.0955 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A3273B #27A38F

analogous

#A32779 #A3273B #A35127

triadic

#A3273B #3BA327 #273BA3

tetradic

#A3273B #79A327 #27A38F #5127A3

square

#A3273B #79A327 #27A38F #5127A3

split-complementary

#A3273B #27A351 #2779A3

monochromatic

#400F17 #721B29 #A3273B #CF3850 #DB697C

Accessibility & contrast

On white

7.22

#A3273B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#A3273B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A3273B

7.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A3273B	#FFFFFF	#000000	##FFFFFF
##A3273B	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)

#4A473B

Deuteranopia (green-blind)

#696138

Tritanopia (blue-blind)

#B30030

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #a3273b;
/* rgb */ color: rgb(163, 39, 59);
/* oklch */ color: oklch(47.7% 0.159 17.0);

Tailwind

colors: {
  custom: {
    50: '#c56c70',
    500: '#a3273b',
    950: '#000000',
  },
}

SCSS

$custom: #a3273b;
$custom-light: #c56c70;
$custom-dark: #000000;

JSON

{
  "hex": "#a3273b",
  "rgb": {
    "r": 163,
    "g": 39,
    "b": 59
  },
  "hsl": {
    "h": 350.323,
    "s": 61.386,
    "l": 39.608
  },
  "oklch": {
    "l": 0.47711,
    "c": 0.15917,
    "h": 17
  },
  "luminance": 0.09553
}

Semantic roles & 50–950 ramp

primary

#A3273B

secondary

#64C1B2

accent

#E4CA43

background

#FDF6F6

surface

#FAECEC

border

#D3C7C7

text

#140707

muted

#837A7A

Preview Lab

Preview with #A3273B

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

Preview Lab → · Contrast checker → · Palette generator →