#A4273B#A4273B

#A4273B is a mid, vivid red. Relative luminance 0.097; OKLCH L 47.9% C 0.160 H 17.1°. Best body text is #FFFFFF at 7.16:1 contrast (WCAG AA passes).

Color values

HEX	#A4273B
RGB	rgb(164, 39, 59)
HSL	hsl(350, 62%, 40%)
HSV	hsv(350, 76%, 64%)
CMYK	cmyk(0%, 76.2%, 64%, 35.7%)
CIE-LAB	lab(37.23, 51.32, 19.61)
CIE-LCH	lch(37.23, 54.94, 20.91°)
OKLab	oklab(47.89% 0.1531 0.0472)
OKLCH	oklch(47.89% 0.16 17.1)
XYZ	xyz(16.8266, 9.6618, 5.1157)
Luminance	0.0966 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A4273B #27A490

analogous

#A4277A #A4273B #A45227

triadic

#A4273B #3BA427 #273BA4

tetradic

#A4273B #7AA427 #27A490 #5227A4

square

#A4273B #7AA427 #27A490 #5227A4

split-complementary

#A4273B #27A452 #277AA4

monochromatic

#410F17 #731B29 #A4273B #D03851 #DC6A7C

Accessibility & contrast

On white

7.16

#A4273B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#A4273B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A4273B

7.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A4273B	#FFFFFF	#000000	##FFFFFF
##A4273B	1.00	7.16	2.93	7.16
#FFFFFF	7.16	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A473B

Deuteranopia (green-blind)

#6A6137

Tritanopia (blue-blind)

#B40030

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #a4273b;
/* rgb */ color: rgb(164, 39, 59);
/* oklch */ color: oklch(47.9% 0.160 17.1);

Tailwind

colors: {
  custom: {
    50: '#c66c70',
    500: '#a4273b',
    950: '#000000',
  },
}

SCSS

$custom: #a4273b;
$custom-light: #c66c70;
$custom-dark: #000000;

JSON

{
  "hex": "#a4273b",
  "rgb": {
    "r": 164,
    "g": 39,
    "b": 59
  },
  "hsl": {
    "h": 350.4,
    "s": 61.576,
    "l": 39.804
  },
  "oklch": {
    "l": 0.47892,
    "c": 0.16017,
    "h": 17.1
  },
  "luminance": 0.09659
}

Semantic roles & 50–950 ramp

primary

#A4273B

secondary

#65C2B3

accent

#E5CB43

background

#FDF6F6

surface

#FAECEC

border

#D3C7C7

text

#140807

muted

#837B7A

Preview Lab

Preview with #A4273B

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

Preview Lab → · Contrast checker → · Palette generator →