#040937#040937

#040937 is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 17.8% C 0.088 H 268.2°. Best body text is #FFFFFF at 19.10:1 contrast (WCAG AA passes).

Color values

HEX	#040937
RGB	rgb(4, 9, 55)
HSL	hsl(234, 86%, 12%)
HSV	hsv(234, 93%, 22%)
CMYK	cmyk(92.7%, 83.6%, 0%, 78.4%)
CIE-LAB	lab(4.49, 14.94, -29.25)
CIE-LCH	lch(4.49, 32.85, 297.06°)
OKLab	oklab(17.8% -0.0028 -0.0882)
OKLCH	oklch(17.8% 0.088 268.2)
XYZ	xyz(0.8371, 0.4969, 3.6655)
Luminance	0.0050 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040937 #373204

analogous

#042337 #040937 #190437

triadic

#040937 #370409 #093704

tetradic

#040937 #370423 #373204 #043719

square

#040937 #370423 #373204 #043719

split-complementary

#040937 #371904 #233704

monochromatic

#02051D #02051D #040937 #081270 #0C1CA9

Accessibility & contrast

On white

19.10

#040937 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#040937 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040937

19.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040937	#FFFFFF	#000000	##FFFFFF
##040937	1.00	19.10	1.10	19.10
#FFFFFF	19.10	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001238

Deuteranopia (green-blind)

#000D36

Tritanopia (blue-blind)

#00161F

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #040937;
/* rgb */ color: rgb(4, 9, 55);
/* oklch */ color: oklch(17.8% 0.088 268.2);

Tailwind

colors: {
  custom: {
    50: '#4d4a6e',
    500: '#040937',
    950: '#000000',
  },
}

SCSS

$custom: #040937;
$custom-light: #4d4a6e;
$custom-dark: #000000;

JSON

{
  "hex": "#040937",
  "rgb": {
    "r": 4,
    "g": 9,
    "b": 55
  },
  "hsl": {
    "h": 234.118,
    "s": 86.441,
    "l": 11.569
  },
  "oklch": {
    "l": 0.17797,
    "c": 0.08828,
    "h": 268.2
  },
  "luminance": 0.00497
}

Semantic roles & 50–950 ramp

primary

#040937

secondary

#79701E

accent

#E82BFD

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020107

muted

#78777A

Preview Lab

Preview with #040937

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

Preview Lab → · Contrast checker → · Palette generator →