#280306#280306

#280306 is a very dark, moderate red. Relative luminance 0.005; OKLCH L 18.2% C 0.063 H 20.2°. Best body text is #FFFFFF at 18.99:1 contrast (WCAG AA passes).

Color values

HEX	#280306
RGB	rgb(40, 3, 6)
HSL	hsl(355, 86%, 8%)
HSV	hsv(355, 93%, 16%)
CMYK	cmyk(0%, 92.5%, 85%, 84.3%)
CIE-LAB	lab(4.78, 17.77, 5.03)
CIE-LCH	lch(4.78, 18.46, 15.81°)
OKLab	oklab(18.22% 0.0596 0.0219)
OKLCH	oklch(18.22% 0.063 20.2)
XYZ	xyz(0.9406, 0.5295, 0.2249)
Luminance	0.0053 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#280306 #032825

analogous

#280318 #280306 #281203

triadic

#280306 #062803 #030628

tetradic

#280306 #182803 #032825 #120328

square

#280306 #182803 #032825 #120328

split-complementary

#280306 #032812 #031828

monochromatic

#1C0204 #1C0204 #280306 #61070F #9A0C17

Accessibility & contrast

On white

18.99

#280306 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#280306 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #280306

18.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##280306	#FFFFFF	#000000	##FFFFFF
##280306	1.00	18.99	1.11	18.99
#FFFFFF	18.99	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C0B06

Deuteranopia (green-blind)

#161305

Tritanopia (blue-blind)

#2D0004

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #280306;
/* rgb */ color: rgb(40, 3, 6);
/* oklch */ color: oklch(18.2% 0.063 20.2);

Tailwind

colors: {
  custom: {
    50: '#634749',
    500: '#280306',
    950: '#000000',
  },
}

SCSS

$custom: #280306;
$custom-light: #634749;
$custom-dark: #000000;

JSON

{
  "hex": "#280306",
  "rgb": {
    "r": 40,
    "g": 3,
    "b": 6
  },
  "hsl": {
    "h": 355.135,
    "s": 86.047,
    "l": 8.431
  },
  "oklch": {
    "l": 0.18217,
    "c": 0.06348,
    "h": 20.2
  },
  "luminance": 0.00529
}

Semantic roles & 50–950 ramp

primary

#280306

secondary

#1B6C65

accent

#FCEB2C

background

#F6F4F4

surface

#EBE6E6

border

#C6C2C2

text

#060000

muted

#7A7777

Preview Lab

Preview with #280306

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

Preview Lab → · Contrast checker → · Palette generator →