#04052C#04052C

#04052C is a very dark, moderate blue. Relative luminance 0.003; OKLCH L 15.4% C 0.078 H 271.1°. Best body text is #FFFFFF at 19.75:1 contrast (WCAG AA passes).

Color values

HEX	#04052C
RGB	rgb(4, 5, 44)
HSL	hsl(239, 83%, 9%)
HSV	hsv(239, 91%, 17%)
CMYK	cmyk(90.9%, 88.6%, 0%, 82.7%)
CIE-LAB	lab(2.86, 10.58, -23.68)
CIE-LCH	lch(2.86, 25.93, 294.08°)
OKLab	oklab(15.39% 0.0015 -0.0777)
OKLCH	oklch(15.39% 0.078 271.1)
XYZ	xyz(0.5588, 0.3161, 2.4140)
Luminance	0.0032 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04052C #2C2B04

analogous

#04192C #04052C #17042C

triadic

#04052C #2C0405 #052C04

tetradic

#04052C #2C0419 #2C2B04 #042C17

square

#04052C #2C0419 #2C2B04 #042C17

split-complementary

#04052C #2C1704 #192C04

monochromatic

#03031C #03031C #04052C #090B64 #0E129C

Accessibility & contrast

On white

19.75

#04052C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.06

#04052C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04052C

19.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04052C	#FFFFFF	#000000	##FFFFFF
##04052C	1.00	19.75	1.06	19.75
#FFFFFF	19.75	1.00	21.00	1.00
#000000	1.06	21.00	1.00	21.00
##FFFFFF	19.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000C2D

Deuteranopia (green-blind)

#00082B

Tritanopia (blue-blind)

#001017

Achromatopsia (no color)

#0A0A0A

Design tokens & code

CSS

--color: #04052c;
/* rgb */ color: rgb(4, 5, 44);
/* oklch */ color: oklch(15.4% 0.078 271.1);

Tailwind

colors: {
  custom: {
    50: '#494965',
    500: '#04052c',
    950: '#000000',
  },
}

SCSS

$custom: #04052c;
$custom-light: #494965;
$custom-dark: #000000;

JSON

{
  "hex": "#04052c",
  "rgb": {
    "r": 4,
    "g": 5,
    "b": 44
  },
  "hsl": {
    "h": 238.5,
    "s": 83.333,
    "l": 9.412
  },
  "oklch": {
    "l": 0.15387,
    "c": 0.0777,
    "h": 271.1
  },
  "luminance": 0.00316
}

Semantic roles & 50–950 ramp

primary

#04052C

secondary

#6F6D1D

accent

#F52EFA

background

#F4F4F6

surface

#E7E6EB

border

#C3C2C6

text

#010005

muted

#77777A

Preview Lab

Preview with #04052C

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

Preview Lab → · Contrast checker → · Palette generator →