#04101A#04101A

#04101A is a very dark, muted cyan. Relative luminance 0.005; OKLCH L 16.7% C 0.028 H 242.9°. Best body text is #FFFFFF at 19.19:1 contrast (WCAG AA passes).

Color values

HEX	#04101A
RGB	rgb(4, 16, 26)
HSL	hsl(207, 73%, 6%)
HSV	hsv(207, 85%, 10%)
CMYK	cmyk(84.6%, 38.5%, 0%, 89.8%)
CIE-LAB	lab(4.25, -1.06, -7.59)
CIE-LCH	lch(4.25, 7.67, 262.05°)
OKLab	oklab(16.68% -0.013 -0.0253)
OKLCH	oklch(16.68% 0.028 242.9)
XYZ	xyz(0.4217, 0.4709, 1.0458)
Luminance	0.0047 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04101A #1A0E04

analogous

#041A19 #04101A #04051A

triadic

#04101A #1A0410 #101A04

tetradic

#04101A #19041A #1A0E04 #051A04

square

#04101A #19041A #1A0E04 #051A04

split-complementary

#04101A #1A0405 #1A1904

monochromatic

#04101B #04101B #04101B #0C314F #145184

Accessibility & contrast

On white

19.19

#04101A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#04101A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04101A

19.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04101A	#FFFFFF	#000000	##FFFFFF
##04101A	1.00	19.19	1.09	19.19
#FFFFFF	19.19	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C101A

Deuteranopia (green-blind)

#080E1A

Tritanopia (blue-blind)

#001213

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #04101a;
/* rgb */ color: rgb(4, 16, 26);
/* oklch */ color: oklch(16.7% 0.028 242.9);

Tailwind

colors: {
  custom: {
    50: '#484e56',
    500: '#04101a',
    950: '#000000',
  },
}

SCSS

$custom: #04101a;
$custom-light: #484e56;
$custom-dark: #000000;

JSON

{
  "hex": "#04101a",
  "rgb": {
    "r": 4,
    "g": 16,
    "b": 26
  },
  "hsl": {
    "h": 207.273,
    "s": 73.333,
    "l": 5.882
  },
  "oklch": {
    "l": 0.16679,
    "c": 0.02842,
    "h": 242.9
  },
  "luminance": 0.00471
}

Semantic roles & 50–950 ramp

primary

#04101A

secondary

#5C3A1E

accent

#8C38F0

background

#F4F4F5

surface

#E6E7E9

border

#C2C3C5

text

#000103

muted

#777778

Preview Lab

Preview with #04101A

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

Preview Lab → · Contrast checker → · Palette generator →