#280504#280504

#280504 is a very dark, moderate red. Relative luminance 0.006; OKLCH L 18.6% C 0.060 H 27.3°. Best body text is #FFFFFF at 18.86:1 contrast (WCAG AA passes).

Color values

HEX	#280504
RGB	rgb(40, 5, 4)
HSL	hsl(2, 82%, 9%)
HSV	hsv(2, 90%, 16%)
CMYK	cmyk(0%, 87.5%, 90%, 84.3%)
CIE-LAB	lab(5.14, 16.65, 6.36)
CIE-LCH	lch(5.14, 17.83, 20.90°)
OKLab	oklab(18.56% 0.0534 0.0275)
OKLCH	oklch(18.56% 0.06 27.3)
XYZ	xyz(0.9514, 0.5686, 0.1745)
Luminance	0.0057 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#280504 #042728

analogous

#280415 #280504 #281704

triadic

#280504 #042805 #050428

tetradic

#280504 #152804 #042728 #170428

square

#280504 #152804 #042728 #170428

split-complementary

#280504 #042817 #041528

monochromatic

#1C0303 #1C0303 #280504 #600C0A #97130F

Accessibility & contrast

On white

18.86

#280504 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#280504 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #280504

18.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##280504	#FFFFFF	#000000	##FFFFFF
##280504	1.00	18.86	1.11	18.86
#FFFFFF	18.86	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E0C04

Deuteranopia (green-blind)

#171403

Tritanopia (blue-blind)

#2D0005

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #280504;
/* rgb */ color: rgb(40, 5, 4);
/* oklch */ color: oklch(18.6% 0.060 27.3);

Tailwind

colors: {
  custom: {
    50: '#634848',
    500: '#280504',
    950: '#000000',
  },
}

SCSS

$custom: #280504;
$custom-light: #634848;
$custom-dark: #000000;

JSON

{
  "hex": "#280504",
  "rgb": {
    "r": 40,
    "g": 5,
    "b": 4
  },
  "hsl": {
    "h": 1.667,
    "s": 81.818,
    "l": 8.627
  },
  "oklch": {
    "l": 0.1856,
    "c": 0.06007,
    "h": 27.3
  },
  "luminance": 0.00568
}

Semantic roles & 50–950 ramp

primary

#280504

secondary

#1D696B

accent

#F3F830

background

#F6F4F4

surface

#EBE6E6

border

#C6C2C2

text

#060000

muted

#7A7777

Preview Lab

Preview with #280504

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

Preview Lab → · Contrast checker → · Palette generator →