#240003#240003

#240003 is a very dark, moderate red. Relative luminance 0.004; OKLCH L 16.5% C 0.066 H 20.8°. Best body text is #FFFFFF at 19.51:1 contrast (WCAG AA passes).

Color values

HEX	#240003
RGB	rgb(36, 0, 3)
HSL	hsl(355, 100%, 7%)
HSV	hsv(355, 100%, 14%)
CMYK	cmyk(0%, 100%, 91.7%, 85.9%)
CIE-LAB	lab(3.45, 15.62, 4.22)
CIE-LCH	lch(3.45, 16.18, 15.13°)
OKLab	oklab(16.46% 0.0619 0.0235)
OKLCH	oklch(16.46% 0.066 20.8)
XYZ	xyz(0.7441, 0.3818, 0.1206)
Luminance	0.0038 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#240003 #002421

analogous

#240015 #240003 #240F00

triadic

#240003 #032400 #000324

tetradic

#240003 #152400 #002421 #0F0024

square

#240003 #152400 #002421 #0F0024

split-complementary

#240003 #00240F #001524

monochromatic

#1F0003 #1F0003 #240003 #610008 #9E000D

Accessibility & contrast

On white

19.51

#240003 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.08

#240003 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #240003

19.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##240003	#FFFFFF	#000000	##FFFFFF
##240003	1.00	19.51	1.08	19.51
#FFFFFF	19.51	1.00	21.00	1.00
#000000	1.08	21.00	1.00	21.00
##FFFFFF	19.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#080703

Deuteranopia (green-blind)

#121002

Tritanopia (blue-blind)

#290001

Achromatopsia (no color)

#0C0C0C

Design tokens & code

CSS

--color: #240003;
/* rgb */ color: rgb(36, 0, 3);
/* oklch */ color: oklch(16.5% 0.066 20.8);

Tailwind

colors: {
  custom: {
    50: '#5f4648',
    500: '#240003',
    950: '#000000',
  },
}

SCSS

$custom: #240003;
$custom-light: #5f4648;
$custom-dark: #000000;

JSON

{
  "hex": "#240003",
  "rgb": {
    "r": 36,
    "g": 0,
    "b": 3
  },
  "hsl": {
    "h": 355,
    "s": 100,
    "l": 7.059
  },
  "oklch": {
    "l": 0.16457,
    "c": 0.06616,
    "h": 20.8
  },
  "luminance": 0.00382
}

Semantic roles & 50–950 ramp

primary

#240003

secondary

#136D65

accent

#FFED29

background

#F5F3F4

surface

#E9E5E6

border

#C5C1C2

text

#050000

muted

#797777

Preview Lab

Preview with #240003

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

Preview Lab → · Contrast checker → · Palette generator →