#280404#280404

#280404 is a very dark, moderate red. Relative luminance 0.005; OKLCH L 18.4% C 0.062 H 25.8°. Best body text is #FFFFFF at 18.93:1 contrast (WCAG AA passes).

Color values

HEX	#280404
RGB	rgb(40, 4, 4)
HSL	hsl(0, 82%, 9%)
HSV	hsv(0, 90%, 16%)
CMYK	cmyk(0%, 90%, 90%, 84.3%)
CIE-LAB	lab(4.94, 17.08, 6.07)
CIE-LCH	lch(4.94, 18.13, 19.57°)
OKLab	oklab(18.36% 0.0557 0.0269)
OKLCH	oklch(18.36% 0.062 25.8)
XYZ	xyz(0.9405, 0.5469, 0.1709)
Luminance	0.0055 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#280404 #042828

analogous

#280416 #280404 #281604

triadic

#280404 #042804 #040428

tetradic

#280404 #162804 #042828 #160428

square

#280404 #162804 #042828 #160428

split-complementary

#280404 #042816 #041628

monochromatic

#1C0303 #1C0303 #280404 #600A0A #970F0F

Accessibility & contrast

On white

18.93

#280404 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#280404 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #280404

18.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##280404	#FFFFFF	#000000	##FFFFFF
##280404	1.00	18.93	1.11	18.93
#FFFFFF	18.93	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E0B04

Deuteranopia (green-blind)

#171403

Tritanopia (blue-blind)

#2D0004

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #280404;
/* rgb */ color: rgb(40, 4, 4);
/* oklch */ color: oklch(18.4% 0.062 25.8);

Tailwind

colors: {
  custom: {
    50: '#634848',
    500: '#280404',
    950: '#000000',
  },
}

SCSS

$custom: #280404;
$custom-light: #634848;
$custom-dark: #000000;

JSON

{
  "hex": "#280404",
  "rgb": {
    "r": 40,
    "g": 4,
    "b": 4
  },
  "hsl": {
    "h": 0,
    "s": 81.818,
    "l": 8.627
  },
  "oklch": {
    "l": 0.18361,
    "c": 0.06186,
    "h": 25.8
  },
  "luminance": 0.00547
}

Semantic roles & 50–950 ramp

primary

#280404

secondary

#1D6B6B

accent

#F8F830

background

#F6F4F4

surface

#EBE6E6

border

#C6C2C2

text

#060000

muted

#7A7777

Preview Lab

Preview with #280404

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

Preview Lab → · Contrast checker → · Palette generator →