#280400#280400

#280400 is a very dark, moderate red. Relative luminance 0.005; OKLCH L 18.2% C 0.064 H 35.2°. Best body text is #FFFFFF at 18.96:1 contrast (WCAG AA passes).

Color values

HEX	#280400
RGB	rgb(40, 4, 0)
HSL	hsl(6, 100%, 8%)
HSV	hsv(6, 100%, 16%)
CMYK	cmyk(0%, 90%, 100%, 84.3%)
CIE-LAB	lab(4.86, 16.59, 7.59)
CIE-LCH	lch(4.86, 18.24, 24.58°)
OKLab	oklab(18.25% 0.0521 0.0367)
OKLCH	oklch(18.25% 0.064 35.2)
XYZ	xyz(0.9186, 0.5381, 0.0555)
Luminance	0.0054 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#280400 #002428

analogous

#280010 #280400 #281800

triadic

#280400 #002804 #040028

tetradic

#280400 #102800 #002428 #180028

square

#280400 #102800 #002428 #180028

split-complementary

#280400 #002818 #001028

monochromatic

#1F0300 #1F0300 #280400 #650A00 #A21000

Accessibility & contrast

On white

18.96

#280400 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#280400 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #280400

18.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##280400	#FFFFFF	#000000	##FFFFFF
##280400	1.00	18.96	1.11	18.96
#FFFFFF	18.96	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E0B00

Deuteranopia (green-blind)

#171400

Tritanopia (blue-blind)

#2D0003

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #280400;
/* rgb */ color: rgb(40, 4, 0);
/* oklch */ color: oklch(18.2% 0.064 35.2);

Tailwind

colors: {
  custom: {
    50: '#634847',
    500: '#280400',
    950: '#000000',
  },
}

SCSS

$custom: #280400;
$custom-light: #634847;
$custom-dark: #000000;

JSON

{
  "hex": "#280400",
  "rgb": {
    "r": 40,
    "g": 4,
    "b": 0
  },
  "hsl": {
    "h": 6,
    "s": 100,
    "l": 7.843
  },
  "oklch": {
    "l": 0.18245,
    "c": 0.06376,
    "h": 35.2
  },
  "luminance": 0.00538
}

Semantic roles & 50–950 ramp

primary

#280400

secondary

#146770

accent

#EAFF29

background

#F6F4F3

surface

#EBE6E5

border

#C6C2C1

text

#060000

muted

#7A7777

Preview Lab

Preview with #280400

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

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