#04012B#04012B

#04012B is a very dark, moderate blue. Relative luminance 0.002; OKLCH L 14.0% C 0.085 H 273.3°. Best body text is #FFFFFF at 20.11:1 contrast (WCAG AA passes).

Color values

HEX	#04012B
RGB	rgb(4, 1, 43)
HSL	hsl(244, 95%, 9%)
HSV	hsv(244, 98%, 17%)
CMYK	cmyk(90.7%, 97.7%, 0%, 83.1%)
CIE-LAB	lab(2.00, 11.71, -24.26)
CIE-LCH	lch(2.00, 26.94, 295.77°)
OKLab	oklab(14.03% 0.0049 -0.0844)
OKLCH	oklch(14.03% 0.085 273.3)
XYZ	xyz(0.4968, 0.2219, 2.3017)
Luminance	0.0022 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04012B #282B01

analogous

#01132B #04012B #19012B

triadic

#04012B #2B0401 #012B04

tetradic

#04012B #2B0113 #282B01 #012B19

square

#04012B #2B0113 #282B01 #012B19

split-complementary

#04012B #2B1901 #132B01

monochromatic

#03011E #03011E #04012B #0A0267 #0F04A3

Accessibility & contrast

On white

20.11

#04012B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.04

#04012B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04012B

20.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04012B	#FFFFFF	#000000	##FFFFFF
##04012B	1.00	20.11	1.04	20.11
#FFFFFF	20.11	1.00	21.00	1.00
#000000	1.04	21.00	1.00	21.00
##FFFFFF	20.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00092C

Deuteranopia (green-blind)

#00062A

Tritanopia (blue-blind)

#000C15

Achromatopsia (no color)

#070707

Design tokens & code

CSS

--color: #04012b;
/* rgb */ color: rgb(4, 1, 43);
/* oklch */ color: oklch(14.0% 0.085 273.3);

Tailwind

colors: {
  custom: {
    50: '#494764',
    500: '#04012b',
    950: '#000000',
  },
}

SCSS

$custom: #04012b;
$custom-light: #494764;
$custom-dark: #000000;

JSON

{
  "hex": "#04012b",
  "rgb": {
    "r": 4,
    "g": 1,
    "b": 43
  },
  "hsl": {
    "h": 244.286,
    "s": 95.455,
    "l": 8.627
  },
  "oklch": {
    "l": 0.14028,
    "c": 0.08455,
    "h": 273.3
  },
  "luminance": 0.00222
}

Semantic roles & 50–950 ramp

primary

#04012B

secondary

#6B7117

accent

#FF29F0

background

#F4F3F6

surface

#E7E5EB

border

#C3C1C6

text

#010005

muted

#77777A

Preview Lab

Preview with #04012B

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

Preview Lab → · Contrast checker → · Palette generator →