#A4303B#A4303B

#A4303B is a mid, vivid red. Relative luminance 0.103; OKLCH L 48.8% C 0.151 H 19.6°. Best body text is #FFFFFF at 6.85:1 contrast (WCAG AA passes).

Color values

HEX	#A4303B
RGB	rgb(164, 48, 59)
HSL	hsl(354, 55%, 42%)
HSV	hsv(354, 71%, 64%)
CMYK	cmyk(0%, 70.7%, 64%, 35.7%)
CIE-LAB	lab(38.42, 48.02, 21.14)
CIE-LCH	lch(38.42, 52.47, 23.76°)
OKLab	oklab(48.78% 0.1425 0.0507)
OKLCH	oklch(48.78% 0.151 19.6)
XYZ	xyz(17.1580, 10.3246, 5.2262)
Luminance	0.1032 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A4303B #30A499

analogous

#A43075 #A4303B #A45F30

triadic

#A4303B #3BA430 #303BA4

tetradic

#A4303B #75A430 #30A499 #5F30A4

square

#A4303B #75A430 #30A499 #5F30A4

split-complementary

#A4303B #30A45F #3075A4

monochromatic

#451419 #75222A #A4303B #C94854 #D77780

Accessibility & contrast

On white

6.85

#A4303B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#A4303B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A4303B

6.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A4303B	#FFFFFF	#000000	##FFFFFF
##A4303B	1.00	6.85	3.06	6.85
#FFFFFF	6.85	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F4B3B

Deuteranopia (green-blind)

#6D6338

Tritanopia (blue-blind)

#B40F35

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #a4303b;
/* rgb */ color: rgb(164, 48, 59);
/* oklch */ color: oklch(48.8% 0.151 19.6);

Tailwind

colors: {
  custom: {
    50: '#c67070',
    500: '#a4303b',
    950: '#000000',
  },
}

SCSS

$custom: #a4303b;
$custom-light: #c67070;
$custom-dark: #000000;

JSON

{
  "hex": "#a4303b",
  "rgb": {
    "r": 164,
    "g": 48,
    "b": 59
  },
  "hsl": {
    "h": 354.31,
    "s": 54.717,
    "l": 41.569
  },
  "oklch": {
    "l": 0.48777,
    "c": 0.15125,
    "h": 19.6
  },
  "luminance": 0.10322
}

Semantic roles & 50–950 ramp

primary

#A4303B

secondary

#70BFB8

accent

#DED04A

background

#FDF7F6

surface

#FAEDEC

border

#D3C8C7

text

#140807

muted

#837B7A

Preview Lab

Preview with #A4303B

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

Preview Lab → · Contrast checker → · Palette generator →