#04101D#04101D

#04101D is a very dark, muted cyan. Relative luminance 0.005; OKLCH L 16.9% C 0.033 H 249.5°. Best body text is #FFFFFF at 19.14:1 contrast (WCAG AA passes).

Color values

HEX	#04101D
RGB	rgb(4, 16, 29)
HSL	hsl(211, 76%, 6%)
HSV	hsv(211, 86%, 11%)
CMYK	cmyk(86.2%, 44.8%, 0%, 88.6%)
CIE-LAB	lab(4.38, -0.17, -9.76)
CIE-LCH	lch(4.38, 9.76, 269.02°)
OKLab	oklab(16.89% -0.0117 -0.0312)
OKLCH	oklch(16.89% 0.033 249.5)
XYZ	xyz(0.4570, 0.4851, 1.2317)
Luminance	0.0049 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04101D #1D1104

analogous

#041D1D #04101D #05041D

triadic

#04101D #1D0410 #101D04

tetradic

#04101D #1D041D #1D1104 #041D05

square

#04101D #1D041D #1D1104 #041D05

split-complementary

#04101D #1D0504 #1D1D04

monochromatic

#040F1B #040F1B #04101D #0B2E53 #134B89

Accessibility & contrast

On white

19.14

#04101D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#04101D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04101D

19.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04101D	#FFFFFF	#000000	##FFFFFF
##04101D	1.00	19.14	1.10	19.14
#FFFFFF	19.14	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A111E

Deuteranopia (green-blind)

#070E1D

Tritanopia (blue-blind)

#001315

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #04101d;
/* rgb */ color: rgb(4, 16, 29);
/* oklch */ color: oklch(16.9% 0.033 249.5);

Tailwind

colors: {
  custom: {
    50: '#484e58',
    500: '#04101d',
    950: '#000000',
  },
}

SCSS

$custom: #04101d;
$custom-light: #484e58;
$custom-dark: #000000;

JSON

{
  "hex": "#04101d",
  "rgb": {
    "r": 4,
    "g": 16,
    "b": 29
  },
  "hsl": {
    "h": 211.2,
    "s": 75.758,
    "l": 6.471
  },
  "oklch": {
    "l": 0.16894,
    "c": 0.03337,
    "h": 249.5
  },
  "luminance": 0.00485
}

Semantic roles & 50–950 ramp

primary

#04101D

secondary

#5F401D

accent

#9835F2

background

#F4F4F5

surface

#E6E7E9

border

#C2C3C5

text

#000103

muted

#777778

Preview Lab

Preview with #04101D

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

Preview Lab → · Contrast checker → · Palette generator →