#04041B#04041B

#04041B is a very dark, muted blue. Relative luminance 0.002; OKLCH L 12.9% C 0.052 H 276.3°. Best body text is #FFFFFF at 20.22:1 contrast (WCAG AA passes).

Color values

HEX	#04041B
RGB	rgb(4, 4, 27)
HSL	hsl(240, 74%, 6%)
HSV	hsv(240, 85%, 11%)
CMYK	cmyk(85.2%, 85.2%, 0%, 89.4%)
CIE-LAB	lab(1.73, 4.47, -12.11)
CIE-LCH	lch(1.73, 12.91, 290.24°)
OKLab	oklab(12.86% 0.0057 -0.0514)
OKLCH	oklch(12.86% 0.052 276.3)
XYZ	xyz(0.2913, 0.1918, 1.0584)
Luminance	0.0019 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04041B #1B1B04

analogous

#040F1B #04041B #0F041B

triadic

#04041B #1B0404 #041B04

tetradic

#04041B #1B040F #1B1B04 #041B0F

square

#04041B #1B040F #1B1B04 #041B0F

split-complementary

#04041B #1B0F04 #0F1B04

monochromatic

#04041B #04041B #04041B #0C0C50 #141486

Accessibility & contrast

On white

20.22

#04041B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.04

#04041B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04041B

20.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04041B	#FFFFFF	#000000	##FFFFFF
##04041B	1.00	20.22	1.04	20.22
#FFFFFF	20.22	1.00	21.00	1.00
#000000	1.04	21.00	1.00	21.00
##FFFFFF	20.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00071C

Deuteranopia (green-blind)

#00061B

Tritanopia (blue-blind)

#00090D

Achromatopsia (no color)

#060606

Design tokens & code

CSS

--color: #04041b;
/* rgb */ color: rgb(4, 4, 27);
/* oklch */ color: oklch(12.9% 0.052 276.3);

Tailwind

colors: {
  custom: {
    50: '#484857',
    500: '#04041b',
    950: '#000000',
  },
}

SCSS

$custom: #04041b;
$custom-light: #484857;
$custom-dark: #000000;

JSON

{
  "hex": "#04041b",
  "rgb": {
    "r": 4,
    "g": 4,
    "b": 27
  },
  "hsl": {
    "h": 240,
    "s": 74.194,
    "l": 6.078
  },
  "oklch": {
    "l": 0.12856,
    "c": 0.05173,
    "h": 276.3
  },
  "luminance": 0.00192
}

Semantic roles & 50–950 ramp

primary

#04041B

secondary

#5D5D1E

accent

#F137F1

background

#F4F4F5

surface

#E6E6E9

border

#C2C2C5

text

#000003

muted

#777778

Preview Lab

Preview with #04041B

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

Preview Lab → · Contrast checker → · Palette generator →