#040303#040303

#040303 is a very dark, near-neutral red. Relative luminance 0.001; OKLCH L 10.0% C 0.004 H 17.7°. Best body text is #FFFFFF at 20.60:1 contrast (WCAG AA passes).

Color values

HEX	#040303
RGB	rgb(4, 3, 3)
HSL	hsl(0, 14%, 1%)
HSV	hsv(0, 25%, 2%)
CMYK	cmyk(0%, 25%, 25%, 98.4%)
CIE-LAB	lab(0.88, 0.26, 0.09)
CIE-LCH	lch(0.88, 0.28, 19.33°)
OKLab	oklab(9.96% 0.0034 0.0011)
OKLCH	oklch(9.96% 0.004 17.7)
XYZ	xyz(0.0991, 0.0975, 0.0997)
Luminance	0.0010 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040303 #030404

analogous

#040304 #040303 #040403

triadic

#040303 #030403 #030304

tetradic

#040303 #040403 #030404 #040304

square

#040303 #040403 #030404 #040304

split-complementary

#040303 #030404 #030404

monochromatic

#110D0D #110D0D #110D0D #271D1D #4A3737

Accessibility & contrast

On white

20.60

#040303 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.02

#040303 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040303

20.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040303	#FFFFFF	#000000	##FFFFFF
##040303	1.00	20.60	1.02	20.60
#FFFFFF	20.60	1.00	21.00	1.00
#000000	1.02	21.00	1.00	21.00
##FFFFFF	20.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#030303

Deuteranopia (green-blind)

#030303

Tritanopia (blue-blind)

#040303

Achromatopsia (no color)

#030303

Design tokens & code

CSS

--color: #040303;
/* rgb */ color: rgb(4, 3, 3);
/* oklch */ color: oklch(10.0% 0.004 17.7);

Tailwind

colors: {
  custom: {
    50: '#484848',
    500: '#040303',
    950: '#000000',
  },
}

SCSS

$custom: #040303;
$custom-light: #484848;
$custom-dark: #000000;

JSON

{
  "hex": "#040303",
  "rgb": {
    "r": 4,
    "g": 3,
    "b": 3
  },
  "hsl": {
    "h": 0,
    "s": 14.286,
    "l": 1.373
  },
  "oklch": {
    "l": 0.09959,
    "c": 0.00358,
    "h": 17.7
  },
  "luminance": 0.00098
}

Semantic roles & 50–950 ramp

primary

#040303

secondary

#2C3636

accent

#B7B771

background

#F4F4F4

surface

#E6E6E6

border

#C2C2C2

text

#000000

muted

#777777

Preview Lab

Preview with #040303

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

Preview Lab → · Contrast checker → · Palette generator →