#180304#180304

#180304 is a very dark, muted red. Relative luminance 0.003; OKLCH L 14.4% C 0.042 H 19.7°. Best body text is #FFFFFF at 19.93:1 contrast (WCAG AA passes).

Color values

HEX	#180304
RGB	rgb(24, 3, 4)
HSL	hsl(357, 78%, 5%)
HSV	hsv(357, 88%, 9%)
CMYK	cmyk(0%, 87.5%, 83.3%, 90.6%)
CIE-LAB	lab(2.42, 7.23, 2.12)
CIE-LCH	lch(2.42, 7.53, 16.33°)
OKLab	oklab(14.41% 0.0396 0.0142)
OKLCH	oklch(14.41% 0.042 19.7)
XYZ	xyz(0.4312, 0.2681, 0.1439)
Luminance	0.0027 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#180304 #031817

analogous

#18030E #180304 #180C03

triadic

#180304 #041803 #030418

tetradic

#180304 #0E1803 #031817 #0C0318

square

#180304 #0E1803 #031817 #0C0318

split-complementary

#180304 #03180C #030E18

monochromatic

#1B0305 #1B0305 #1B0305 #4E0A0D #851116

Accessibility & contrast

On white

19.93

#180304 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.05

#180304 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #180304

19.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##180304	#FFFFFF	#000000	##FFFFFF
##180304	1.00	19.93	1.05	19.93
#FFFFFF	19.93	1.00	21.00	1.00
#000000	1.05	21.00	1.00	21.00
##FFFFFF	19.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#070604

Deuteranopia (green-blind)

#0D0B04

Tritanopia (blue-blind)

#1B0103

Achromatopsia (no color)

#090909

Design tokens & code

CSS

--color: #180304;
/* rgb */ color: rgb(24, 3, 4);
/* oklch */ color: oklch(14.4% 0.042 19.7);

Tailwind

colors: {
  custom: {
    50: '#544848',
    500: '#180304',
    950: '#000000',
  },
}

SCSS

$custom: #180304;
$custom-light: #544848;
$custom-dark: #000000;

JSON

{
  "hex": "#180304",
  "rgb": {
    "r": 24,
    "g": 3,
    "b": 4
  },
  "hsl": {
    "h": 357.143,
    "s": 77.778,
    "l": 5.294
  },
  "oklch": {
    "l": 0.14408,
    "c": 0.04201,
    "h": 19.7
  },
  "luminance": 0.00268
}

Semantic roles & 50–950 ramp

primary

#180304

secondary

#1B5C59

accent

#F4EB34

background

#F4F4F4

surface

#E7E6E6

border

#C3C2C2

text

#020000

muted

#787777

Preview Lab

Preview with #180304

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

Preview Lab → · Contrast checker → · Palette generator →