#04042F#04042F

#04042F is a very dark, moderate blue. Relative luminance 0.003; OKLCH L 15.5% C 0.084 H 271.0°. Best body text is #FFFFFF at 19.74:1 contrast (WCAG AA passes).

Color values

HEX	#04042F
RGB	rgb(4, 4, 47)
HSL	hsl(240, 84%, 10%)
HSV	hsv(240, 91%, 18%)
CMYK	cmyk(91.5%, 91.5%, 0%, 81.6%)
CIE-LAB	lab(2.87, 12.47, -25.92)
CIE-LCH	lch(2.87, 28.76, 295.69°)
OKLab	oklab(15.53% 0.0015 -0.0841)
OKLCH	oklch(15.53% 0.084 271)
XYZ	xyz(0.6064, 0.3178, 2.7182)
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

#04042F #2F2F04

analogous

#04192F #04042F #19042F

triadic

#04042F #2F0404 #042F04

tetradic

#04042F #2F041A #2F2F04 #042F1A

square

#04042F #2F041A #2F2F04 #042F1A

split-complementary

#04042F #2F1A04 #1A2F04

monochromatic

#02021C #02021C #04042F #090967 #0E0EA0

Accessibility & contrast

On white

19.74

#04042F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.06

#04042F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04042F

19.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04042F	#FFFFFF	#000000	##FFFFFF
##04042F	1.00	19.74	1.06	19.74
#FFFFFF	19.74	1.00	21.00	1.00
#000000	1.06	21.00	1.00	21.00
##FFFFFF	19.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000D30

Deuteranopia (green-blind)

#00082E

Tritanopia (blue-blind)

#001019

Achromatopsia (no color)

#0A0A0A

Design tokens & code

CSS

--color: #04042f;
/* rgb */ color: rgb(4, 4, 47);
/* oklch */ color: oklch(15.5% 0.084 271.0);

Tailwind

colors: {
  custom: {
    50: '#4a4868',
    500: '#04042f',
    950: '#000000',
  },
}

SCSS

$custom: #04042f;
$custom-light: #4a4868;
$custom-dark: #000000;

JSON

{
  "hex": "#04042f",
  "rgb": {
    "r": 4,
    "g": 4,
    "b": 47
  },
  "hsl": {
    "h": 240,
    "s": 84.314,
    "l": 10
  },
  "oklch": {
    "l": 0.15531,
    "c": 0.08411,
    "h": 271
  },
  "luminance": 0.00318
}

Semantic roles & 50–950 ramp

primary

#04042F

secondary

#72721D

accent

#FB2DFB

background

#F4F4F6

surface

#E7E6EB

border

#C3C2C6

text

#010006

muted

#77777A

Preview Lab

Preview with #04042F

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

Preview Lab → · Contrast checker → · Palette generator →