#280003#280003

#280003 is a very dark, moderate red. Relative luminance 0.005; OKLCH L 17.5% C 0.070 H 22.1°. Best body text is #FFFFFF at 19.24:1 contrast (WCAG AA passes).

Color values

HEX	#280003
RGB	rgb(40, 0, 3)
HSL	hsl(356, 100%, 8%)
HSV	hsv(356, 100%, 16%)
CMYK	cmyk(0%, 100%, 92.5%, 84.3%)
CIE-LAB	lab(4.14, 18.66, 5.30)
CIE-LCH	lch(4.14, 19.40, 15.87°)
OKLab	oklab(17.48% 0.0653 0.0265)
OKLCH	oklch(17.48% 0.07 22.1)
XYZ	xyz(0.8916, 0.4578, 0.1276)
Luminance	0.0046 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#280003 #002825

analogous

#280017 #280003 #281100

triadic

#280003 #032800 #000328

tetradic

#280003 #172800 #002825 #110028

square

#280003 #172800 #002825 #110028

split-complementary

#280003 #002811 #001728

monochromatic

#1F0002 #1F0002 #280003 #650008 #A2000C

Accessibility & contrast

On white

19.24

#280003 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#280003 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #280003

19.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##280003	#FFFFFF	#000000	##FFFFFF
##280003	1.00	19.24	1.09	19.24
#FFFFFF	19.24	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A0803

Deuteranopia (green-blind)

#151202

Tritanopia (blue-blind)

#2D0001

Achromatopsia (no color)

#0E0E0E

Design tokens & code

CSS

--color: #280003;
/* rgb */ color: rgb(40, 0, 3);
/* oklch */ color: oklch(17.5% 0.070 22.1);

Tailwind

colors: {
  custom: {
    50: '#634648',
    500: '#280003',
    950: '#000000',
  },
}

SCSS

$custom: #280003;
$custom-light: #634648;
$custom-dark: #000000;

JSON

{
  "hex": "#280003",
  "rgb": {
    "r": 40,
    "g": 0,
    "b": 3
  },
  "hsl": {
    "h": 355.5,
    "s": 100,
    "l": 7.843
  },
  "oklch": {
    "l": 0.17482,
    "c": 0.07044,
    "h": 22.1
  },
  "luminance": 0.00458
}

Semantic roles & 50–950 ramp

primary

#280003

secondary

#147069

accent

#FFEF29

background

#F6F3F4

surface

#EBE5E6

border

#C6C1C2

text

#060000

muted

#7A7677

Preview Lab

Preview with #280003

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

Preview Lab → · Contrast checker → · Palette generator →