#240403#240403

#240403 is a very dark, muted red. Relative luminance 0.005; OKLCH L 17.4% C 0.057 H 27.8°. Best body text is #FFFFFF at 19.20:1 contrast (WCAG AA passes).

Color values

HEX	#240403
RGB	rgb(36, 4, 3)
HSL	hsl(2, 85%, 8%)
HSV	hsv(2, 92%, 14%)
CMYK	cmyk(0%, 88.9%, 91.7%, 85.9%)
CIE-LAB	lab(4.23, 14.01, 5.37)
CIE-LCH	lch(4.23, 15.01, 20.95°)
OKLab	oklab(17.41% 0.0503 0.0266)
OKLCH	oklch(17.41% 0.057 27.8)
XYZ	xyz(0.7875, 0.4686, 0.1351)
Luminance	0.0047 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#240403 #032324

analogous

#240312 #240403 #241403

triadic

#240403 #032404 #040324

tetradic

#240403 #122403 #032324 #140324

square

#240403 #122403 #032324 #140324

split-complementary

#240403 #032414 #031224

monochromatic

#1C0302 #1C0302 #240403 #5C0A08 #95110C

Accessibility & contrast

On white

19.20

#240403 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#240403 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #240403

19.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##240403	#FFFFFF	#000000	##FFFFFF
##240403	1.00	19.20	1.09	19.20
#FFFFFF	19.20	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C0A03

Deuteranopia (green-blind)

#151102

Tritanopia (blue-blind)

#290004

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #240403;
/* rgb */ color: rgb(36, 4, 3);
/* oklch */ color: oklch(17.4% 0.057 27.8);

Tailwind

colors: {
  custom: {
    50: '#5f4848',
    500: '#240403',
    950: '#000000',
  },
}

SCSS

$custom: #240403;
$custom-light: #5f4848;
$custom-dark: #000000;

JSON

{
  "hex": "#240403",
  "rgb": {
    "r": 36,
    "g": 4,
    "b": 3
  },
  "hsl": {
    "h": 1.818,
    "s": 84.615,
    "l": 7.647
  },
  "oklch": {
    "l": 0.17407,
    "c": 0.05691,
    "h": 27.8
  },
  "luminance": 0.00468
}

Semantic roles & 50–950 ramp

primary

#240403

secondary

#1B6668

accent

#F5FB2D

background

#F5F4F4

surface

#E9E6E6

border

#C5C2C2

text

#050000

muted

#797777

Preview Lab

Preview with #240403

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

Preview Lab → · Contrast checker → · Palette generator →