#280500#280500

#280500 is a very dark, moderate red. Relative luminance 0.006; OKLCH L 18.4% C 0.062 H 36.7°. Best body text is #FFFFFF at 18.88:1 contrast (WCAG AA passes).

Color values

HEX	#280500
RGB	rgb(40, 5, 0)
HSL	hsl(8, 100%, 8%)
HSV	hsv(8, 100%, 16%)
CMYK	cmyk(0%, 87.5%, 100%, 84.3%)
CIE-LAB	lab(5.06, 16.16, 7.87)
CIE-LCH	lch(5.06, 17.98, 25.97°)
OKLab	oklab(18.45% 0.0499 0.0372)
OKLCH	oklch(18.45% 0.062 36.7)
XYZ	xyz(0.9295, 0.5598, 0.0591)
Luminance	0.0056 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#280500 #002328

analogous

#28000F #280500 #281900

triadic

#280500 #002805 #050028

tetradic

#280500 #0F2800 #002328 #190028

square

#280500 #0F2800 #002328 #190028

split-complementary

#280500 #002819 #000F28

monochromatic

#1F0400 #1F0400 #280500 #650D00 #A21400

Accessibility & contrast

On white

18.88

#280500 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#280500 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #280500

18.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##280500	#FFFFFF	#000000	##FFFFFF
##280500	1.00	18.88	1.11	18.88
#FFFFFF	18.88	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F0C00

Deuteranopia (green-blind)

#181400

Tritanopia (blue-blind)

#2D0004

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #280500;
/* rgb */ color: rgb(40, 5, 0);
/* oklch */ color: oklch(18.4% 0.062 36.7);

Tailwind

colors: {
  custom: {
    50: '#634847',
    500: '#280500',
    950: '#000000',
  },
}

SCSS

$custom: #280500;
$custom-light: #634847;
$custom-dark: #000000;

JSON

{
  "hex": "#280500",
  "rgb": {
    "r": 40,
    "g": 5,
    "b": 0
  },
  "hsl": {
    "h": 7.5,
    "s": 100,
    "l": 7.843
  },
  "oklch": {
    "l": 0.18447,
    "c": 0.06217,
    "h": 36.7
  },
  "luminance": 0.0056
}

Semantic roles & 50–950 ramp

primary

#280500

secondary

#146470

accent

#E4FF29

background

#F6F4F3

surface

#EBE6E5

border

#C6C2C1

text

#060000

muted

#7A7777

Preview Lab

Preview with #280500

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

Preview Lab → · Contrast checker → · Palette generator →