#A4273A#A4273A

#A4273A is a mid, vivid red. Relative luminance 0.096; OKLCH L 47.9% C 0.160 H 17.6°. Best body text is #FFFFFF at 7.17:1 contrast (WCAG AA passes).

Color values

HEX	#A4273A
RGB	rgb(164, 39, 58)
HSL	hsl(351, 62%, 40%)
HSV	hsv(351, 76%, 64%)
CMYK	cmyk(0%, 76.2%, 64.6%, 35.7%)
CIE-LAB	lab(37.21, 51.26, 20.21)
CIE-LCH	lch(37.21, 55.10, 21.52°)
OKLab	oklab(47.87% 0.1526 0.0485)
OKLCH	oklch(47.87% 0.16 17.6)
XYZ	xyz(16.8009, 9.6515, 4.9804)
Luminance	0.0965 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A4273A #27A491

analogous

#A42779 #A4273A #A45327

triadic

#A4273A #3AA427 #273AA4

tetradic

#A4273A #79A427 #27A491 #5327A4

square

#A4273A #79A427 #27A491 #5327A4

split-complementary

#A4273A #27A453 #2779A4

monochromatic

#410F17 #731B29 #A4273A #D0384F #DC6A7B

Accessibility & contrast

On white

7.17

#A4273A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#A4273A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A4273A

7.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A4273A	#FFFFFF	#000000	##FFFFFF
##A4273A	1.00	7.17	2.93	7.17
#FFFFFF	7.17	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A473A

Deuteranopia (green-blind)

#6A6136

Tritanopia (blue-blind)

#B4002F

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #a4273a;
/* rgb */ color: rgb(164, 39, 58);
/* oklch */ color: oklch(47.9% 0.160 17.6);

Tailwind

colors: {
  custom: {
    50: '#c66c70',
    500: '#a4273a',
    950: '#000000',
  },
}

SCSS

$custom: #a4273a;
$custom-light: #c66c70;
$custom-dark: #000000;

JSON

{
  "hex": "#a4273a",
  "rgb": {
    "r": 164,
    "g": 39,
    "b": 58
  },
  "hsl": {
    "h": 350.88,
    "s": 61.576,
    "l": 39.804
  },
  "oklch": {
    "l": 0.47872,
    "c": 0.16017,
    "h": 17.6
  },
  "luminance": 0.09649
}

Semantic roles & 50–950 ramp

primary

#A4273A

secondary

#65C2B4

accent

#E5CC43

background

#FDF6F6

surface

#FAECEC

border

#D3C7C7

text

#140807

muted

#837B7A

Preview Lab

Preview with #A4273A

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

Preview Lab → · Contrast checker → · Palette generator →