#04052A#04052A

#04052A is a very dark, moderate blue. Relative luminance 0.003; OKLCH L 15.1% C 0.075 H 271.4°. Best body text is #FFFFFF at 19.80:1 contrast (WCAG AA passes).

Color values

HEX	#04052A
RGB	rgb(4, 5, 42)
HSL	hsl(238, 83%, 9%)
HSV	hsv(238, 90%, 16%)
CMYK	cmyk(90.5%, 88.1%, 0%, 83.5%)
CIE-LAB	lab(2.72, 9.65, -22.36)
CIE-LCH	lch(2.72, 24.35, 293.34°)
OKLab	oklab(15.12% 0.0019 -0.0745)
OKLCH	oklch(15.12% 0.075 271.4)
XYZ	xyz(0.5221, 0.3015, 2.2207)
Luminance	0.0030 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04052A #2A2904

analogous

#04182A #04052A #16042A

triadic

#04052A #2A0405 #052A04

tetradic

#04052A #2A0418 #2A2904 #042A16

square

#04052A #2A0418 #2A2904 #042A16

split-complementary

#04052A #2A1604 #182A04

monochromatic

#03031C #03031C #04052A #090C62 #0F129A

Accessibility & contrast

On white

19.80

#04052A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.06

#04052A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04052A

19.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04052A	#FFFFFF	#000000	##FFFFFF
##04052A	1.00	19.80	1.06	19.80
#FFFFFF	19.80	1.00	21.00	1.00
#000000	1.06	21.00	1.00	21.00
##FFFFFF	19.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000C2B

Deuteranopia (green-blind)

#000829

Tritanopia (blue-blind)

#000F16

Achromatopsia (no color)

#0A0A0A

Design tokens & code

CSS

--color: #04052a;
/* rgb */ color: rgb(4, 5, 42);
/* oklch */ color: oklch(15.1% 0.075 271.4);

Tailwind

colors: {
  custom: {
    50: '#494964',
    500: '#04052a',
    950: '#000000',
  },
}

SCSS

$custom: #04052a;
$custom-light: #494964;
$custom-dark: #000000;

JSON

{
  "hex": "#04052a",
  "rgb": {
    "r": 4,
    "g": 5,
    "b": 42
  },
  "hsl": {
    "h": 238.421,
    "s": 82.609,
    "l": 9.02
  },
  "oklch": {
    "l": 0.15117,
    "c": 0.07457,
    "h": 271.4
  },
  "luminance": 0.00302
}

Semantic roles & 50–950 ramp

primary

#04052A

secondary

#6D6B1D

accent

#F42FF9

background

#F4F4F5

surface

#E7E6EA

border

#C3C2C6

text

#010005

muted

#777779

Preview Lab

Preview with #04052A

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

Preview Lab → · Contrast checker → · Palette generator →