#280304#280304

#280304 is a very dark, moderate red. Relative luminance 0.005; OKLCH L 18.2% C 0.064 H 24.3°. Best body text is #FFFFFF at 19.00:1 contrast (WCAG AA passes).

Color values

HEX	#280304
RGB	rgb(40, 3, 4)
HSL	hsl(358, 86%, 8%)
HSV	hsv(358, 93%, 16%)
CMYK	cmyk(0%, 92.5%, 90%, 84.3%)
CIE-LAB	lab(4.74, 17.52, 5.79)
CIE-LCH	lch(4.74, 18.45, 18.28°)
OKLab	oklab(18.16% 0.0582 0.0262)
OKLCH	oklch(18.16% 0.064 24.3)
XYZ	xyz(0.9297, 0.5252, 0.1673)
Luminance	0.0053 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#280304 #032827

analogous

#280316 #280304 #281403

triadic

#280304 #042803 #030428

tetradic

#280304 #162803 #032827 #140328

square

#280304 #162803 #032827 #140328

split-complementary

#280304 #032814 #031628

monochromatic

#1C0203 #1C0203 #280304 #61070A #9A0C0F

Accessibility & contrast

On white

19.00

#280304 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#280304 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #280304

19.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##280304	#FFFFFF	#000000	##FFFFFF
##280304	1.00	19.00	1.11	19.00
#FFFFFF	19.00	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	19.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D0B04

Deuteranopia (green-blind)

#171303

Tritanopia (blue-blind)

#2D0004

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #280304;
/* rgb */ color: rgb(40, 3, 4);
/* oklch */ color: oklch(18.2% 0.064 24.3);

Tailwind

colors: {
  custom: {
    50: '#634748',
    500: '#280304',
    950: '#000000',
  },
}

SCSS

$custom: #280304;
$custom-light: #634748;
$custom-dark: #000000;

JSON

{
  "hex": "#280304",
  "rgb": {
    "r": 40,
    "g": 3,
    "b": 4
  },
  "hsl": {
    "h": 358.378,
    "s": 86.047,
    "l": 8.431
  },
  "oklch": {
    "l": 0.18158,
    "c": 0.06378,
    "h": 24.3
  },
  "luminance": 0.00525
}

Semantic roles & 50–950 ramp

primary

#280304

secondary

#1B6C6A

accent

#FCF72C

background

#F6F4F4

surface

#EBE6E6

border

#C6C2C2

text

#060000

muted

#7A7777

Preview Lab

Preview with #280304

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

Preview Lab → · Contrast checker → · Palette generator →