#A3313B#A3313B

#A3313B is a mid, vivid red. Relative luminance 0.103; OKLCH L 48.7% C 0.149 H 19.8°. Best body text is #FFFFFF at 6.86:1 contrast (WCAG AA passes).

Color values

HEX	#A3313B
RGB	rgb(163, 49, 59)
HSL	hsl(355, 54%, 42%)
HSV	hsv(355, 70%, 64%)
CMYK	cmyk(0%, 69.9%, 63.8%, 36.1%)
CIE-LAB	lab(38.38, 47.29, 21.05)
CIE-LCH	lch(38.38, 51.77, 24.00°)
OKLab	oklab(48.71% 0.1403 0.0506)
OKLCH	oklch(48.71% 0.149 19.8)
XYZ	xyz(16.9937, 10.3013, 5.2303)
Luminance	0.1030 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A3313B #31A399

analogous

#A33174 #A3313B #A36031

triadic

#A3313B #3BA331 #313BA3

tetradic

#A3313B #74A331 #31A399 #6031A3

square

#A3313B #74A331 #31A399 #6031A3

split-complementary

#A3313B #31A360 #3174A3

monochromatic

#451519 #74232A #A3313B #C84954 #D67880

Accessibility & contrast

On white

6.86

#A3313B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#A3313B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A3313B

6.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A3313B	#FFFFFF	#000000	##FFFFFF
##A3313B	1.00	6.86	3.06	6.86
#FFFFFF	6.86	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F4B3B

Deuteranopia (green-blind)

#6C6338

Tritanopia (blue-blind)

#B31336

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #a3313b;
/* rgb */ color: rgb(163, 49, 59);
/* oklch */ color: oklch(48.7% 0.149 19.8);

Tailwind

colors: {
  custom: {
    50: '#c57170',
    500: '#a3313b',
    950: '#000000',
  },
}

SCSS

$custom: #a3313b;
$custom-light: #c57170;
$custom-dark: #000000;

JSON

{
  "hex": "#a3313b",
  "rgb": {
    "r": 163,
    "g": 49,
    "b": 59
  },
  "hsl": {
    "h": 354.737,
    "s": 53.774,
    "l": 41.569
  },
  "oklch": {
    "l": 0.48712,
    "c": 0.14914,
    "h": 19.8
  },
  "luminance": 0.10299
}

Semantic roles & 50–950 ramp

primary

#A3313B

secondary

#71BFB8

accent

#DDD04B

background

#FCF7F6

surface

#F9EDEC

border

#D2C8C7

text

#140807

muted

#827B7A

Preview Lab

Preview with #A3313B

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

Preview Lab → · Contrast checker → · Palette generator →