#040239#040239

#040239 is a very dark, moderate blue. Relative luminance 0.004; OKLCH L 16.5% C 0.102 H 269.8°. Best body text is #FFFFFF at 19.57:1 contrast (WCAG AA passes).

Color values

HEX	#040239
RGB	rgb(4, 2, 57)
HSL	hsl(242, 93%, 12%)
HSV	hsv(242, 96%, 22%)
CMYK	cmyk(93%, 96.5%, 0%, 77.6%)
CIE-LAB	lab(3.29, 18.99, -32.65)
CIE-LCH	lch(3.29, 37.77, 300.18°)
OKLab	oklab(16.52% -0.0004 -0.1016)
OKLCH	oklch(16.52% 0.102 269.8)
XYZ	xyz(0.8100, 0.3645, 3.8978)
Luminance	0.0037 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040239 #373902

analogous

#021C39 #040239 #200239

triadic

#040239 #390402 #023904

tetradic

#040239 #39021C #373902 #023920

square

#040239 #39021C #373902 #023920

split-complementary

#040239 #392002 #1C3902

monochromatic

#02011E #02011E #040239 #080474 #0C06AF

Accessibility & contrast

On white

19.57

#040239 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.07

#040239 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040239

19.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040239	#FFFFFF	#000000	##FFFFFF
##040239	1.00	19.57	1.07	19.57
#FFFFFF	19.57	1.00	21.00	1.00
#000000	1.07	21.00	1.00	21.00
##FFFFFF	19.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000F3A

Deuteranopia (green-blind)

#000938

Tritanopia (blue-blind)

#00131E

Achromatopsia (no color)

#0C0C0C

Design tokens & code

CSS

--color: #040239;
/* rgb */ color: rgb(4, 2, 57);
/* oklch */ color: oklch(16.5% 0.102 269.8);

Tailwind

colors: {
  custom: {
    50: '#4e4770',
    500: '#040239',
    950: '#000000',
  },
}

SCSS

$custom: #040239;
$custom-light: #4e4770;
$custom-dark: #000000;

JSON

{
  "hex": "#040239",
  "rgb": {
    "r": 4,
    "g": 2,
    "b": 57
  },
  "hsl": {
    "h": 242.182,
    "s": 93.22,
    "l": 11.569
  },
  "oklch": {
    "l": 0.1652,
    "c": 0.1016,
    "h": 269.8
  },
  "luminance": 0.00365
}

Semantic roles & 50–950 ramp

primary

#040239

secondary

#797D1A

accent

#FF29F7

background

#F4F3F6

surface

#E7E5EC

border

#C3C1C7

text

#020007

muted

#78777A

Preview Lab

Preview with #040239

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

Preview Lab → · Contrast checker → · Palette generator →