#280509#280509

#280509 is a very dark, muted red. Relative luminance 0.006; OKLCH L 18.7% C 0.059 H 17.4°. Best body text is #FFFFFF at 18.82:1 contrast (WCAG AA passes).

Color values

HEX	#280509
RGB	rgb(40, 5, 9)
HSL	hsl(353, 78%, 9%)
HSV	hsv(353, 88%, 16%)
CMYK	cmyk(0%, 87.5%, 77.5%, 84.3%)
CIE-LAB	lab(5.23, 17.25, 4.47)
CIE-LCH	lch(5.23, 17.82, 14.52°)
OKLab	oklab(18.7% 0.0566 0.0177)
OKLCH	oklch(18.7% 0.059 17.4)
XYZ	xyz(0.9787, 0.5795, 0.3187)
Luminance	0.0058 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#280509 #052824

analogous

#28051B #280509 #281305

triadic

#280509 #092805 #050928

tetradic

#280509 #1B2805 #052824 #130528

square

#280509 #1B2805 #052824 #130528

split-complementary

#280509 #052813 #051B28

monochromatic

#1B0306 #1B0306 #280509 #5E0C15 #951321

Accessibility & contrast

On white

18.82

#280509 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.12

#280509 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #280509

18.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##280509	#FFFFFF	#000000	##FFFFFF
##280509	1.00	18.82	1.12	18.82
#FFFFFF	18.82	1.00	21.00	1.00
#000000	1.12	21.00	1.00	21.00
##FFFFFF	18.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E0D09

Deuteranopia (green-blind)

#171408

Tritanopia (blue-blind)

#2D0107

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #280509;
/* rgb */ color: rgb(40, 5, 9);
/* oklch */ color: oklch(18.7% 0.059 17.4);

Tailwind

colors: {
  custom: {
    50: '#64484b',
    500: '#280509',
    950: '#000000',
  },
}

SCSS

$custom: #280509;
$custom-light: #64484b;
$custom-dark: #000000;

JSON

{
  "hex": "#280509",
  "rgb": {
    "r": 40,
    "g": 5,
    "b": 9
  },
  "hsl": {
    "h": 353.143,
    "s": 77.778,
    "l": 8.824
  },
  "oklch": {
    "l": 0.18701,
    "c": 0.05931,
    "h": 17.4
  },
  "luminance": 0.00579
}

Semantic roles & 50–950 ramp

primary

#280509

secondary

#1F6A61

accent

#F4DE34

background

#F6F4F4

surface

#EBE6E7

border

#C6C2C3

text

#060001

muted

#7A7777

Preview Lab

Preview with #280509

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

Preview Lab → · Contrast checker → · Palette generator →