#04033B#04033B

#04033B is a very dark, moderate blue. Relative luminance 0.004; OKLCH L 17.1% C 0.103 H 269.3°. Best body text is #FFFFFF at 19.42:1 contrast (WCAG AA passes).

Color values

HEX	#04033B
RGB	rgb(4, 3, 59)
HSL	hsl(241, 90%, 12%)
HSV	hsv(241, 95%, 23%)
CMYK	cmyk(93.2%, 94.9%, 0%, 76.9%)
CIE-LAB	lab(3.67, 19.87, -33.49)
CIE-LCH	lch(3.67, 38.94, 300.68°)
OKLab	oklab(17.06% -0.0013 -0.1027)
OKLCH	oklch(17.06% 0.103 269.3)
XYZ	xyz(0.8718, 0.4066, 4.1694)
Luminance	0.0041 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04033B #3A3B03

analogous

#031E3B #04033B #20033B

triadic

#04033B #3B0403 #033B04

tetradic

#04033B #3B031E #3A3B03 #033B20

square

#04033B #3B031E #3A3B03 #033B20

split-complementary

#04033B #3B2003 #1E3B03

monochromatic

#02011D #02011D #04033B #080675 #0C09AF

Accessibility & contrast

On white

19.42

#04033B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.08

#04033B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04033B

19.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04033B	#FFFFFF	#000000	##FFFFFF
##04033B	1.00	19.42	1.08	19.42
#FFFFFF	19.42	1.00	21.00	1.00
#000000	1.08	21.00	1.00	21.00
##FFFFFF	19.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00103D

Deuteranopia (green-blind)

#000A3A

Tritanopia (blue-blind)

#00141F

Achromatopsia (no color)

#0D0D0D

Design tokens & code

CSS

--color: #04033b;
/* rgb */ color: rgb(4, 3, 59);
/* oklch */ color: oklch(17.1% 0.103 269.3);

Tailwind

colors: {
  custom: {
    50: '#4f4772',
    500: '#04033b',
    950: '#000000',
  },
}

SCSS

$custom: #04033b;
$custom-light: #4f4772;
$custom-dark: #000000;

JSON

{
  "hex": "#04033b",
  "rgb": {
    "r": 4,
    "g": 3,
    "b": 59
  },
  "hsl": {
    "h": 241.071,
    "s": 90.323,
    "l": 12.157
  },
  "oklch": {
    "l": 0.17062,
    "c": 0.1027,
    "h": 269.3
  },
  "luminance": 0.00407
}

Semantic roles & 50–950 ramp

primary

#04033B

secondary

#7C7E1C

accent

#FF29FB

background

#F4F3F6

surface

#E7E5EC

border

#C3C1C7

text

#020008

muted

#78777B

Preview Lab

Preview with #04033B

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

Preview Lab → · Contrast checker → · Palette generator →