#AD312B#AD312B

#AD312B is a mid, vivid red. Relative luminance 0.113; OKLCH L 50.2% C 0.162 H 27.4°. Best body text is #FFFFFF at 6.46:1 contrast (WCAG AA passes).

Color values

HEX	#AD312B
RGB	rgb(173, 49, 43)
HSL	hsl(3, 60%, 42%)
HSV	hsv(3, 75%, 68%)
CMYK	cmyk(0%, 71.7%, 75.1%, 32.2%)
CIE-LAB	lab(40.01, 49.74, 33.16)
CIE-LCH	lch(40.01, 59.78, 33.69°)
OKLab	oklab(50.2% 0.1434 0.0743)
OKLCH	oklch(50.2% 0.162 27.4)
XYZ	xyz(18.7701, 11.2581, 3.4697)
Luminance	0.1125 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AD312B #2BA7AD

analogous

#AD2B66 #AD312B #AD722B

triadic

#AD312B #2BAD31 #312BAD

tetradic

#AD312B #66AD2B #2BA7AD #722BAD

square

#AD312B #66AD2B #2BA7AD #722BAD

split-complementary

#AD312B #2BAD72 #2B66AD

monochromatic

#4B1513 #7C231F #AD312B #D14B45 #DD7A76

Accessibility & contrast

On white

6.46

#AD312B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.25

#AD312B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AD312B

6.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AD312B	#FFFFFF	#000000	##FFFFFF
##AD312B	1.00	6.46	3.25	6.46
#FFFFFF	6.46	1.00	21.00	1.00
#000000	3.25	21.00	1.00	21.00
##FFFFFF	6.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#554D29

Deuteranopia (green-blind)

#746826

Tritanopia (blue-blind)

#BF0031

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #ad312b;
/* rgb */ color: rgb(173, 49, 43);
/* oklch */ color: oklch(50.2% 0.162 27.4);

Tailwind

colors: {
  custom: {
    50: '#ce7265',
    500: '#ad312b',
    950: '#000000',
  },
}

SCSS

$custom: #ad312b;
$custom-light: #ce7265;
$custom-dark: #000000;

JSON

{
  "hex": "#ad312b",
  "rgb": {
    "r": 173,
    "g": 49,
    "b": 43
  },
  "hsl": {
    "h": 2.769,
    "s": 60.185,
    "l": 42.353
  },
  "oklch": {
    "l": 0.50199,
    "c": 0.16153,
    "h": 27.4
  },
  "luminance": 0.11255
}

Semantic roles & 50–950 ramp

primary

#AD312B

secondary

#6FC1C4

accent

#DCE344

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150805

muted

#837B7A

Preview Lab

Preview with #AD312B

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

Preview Lab → · Contrast checker → · Palette generator →