#040131#040131

#040131 is a very dark, moderate blue. Relative luminance 0.003; OKLCH L 15.0% C 0.093 H 271.6°. Best body text is #FFFFFF at 19.93:1 contrast (WCAG AA passes).

Color values

HEX	#040131
RGB	rgb(4, 1, 49)
HSL	hsl(244, 96%, 10%)
HSV	hsv(244, 98%, 19%)
CMYK	cmyk(91.8%, 98%, 0%, 80.8%)
CIE-LAB	lab(2.43, 14.72, -28.12)
CIE-LCH	lch(2.43, 31.74, 297.63°)
OKLab	oklab(14.99% 0.0026 -0.0927)
OKLCH	oklch(14.99% 0.093 271.6)
XYZ	xyz(0.6151, 0.2692, 2.9247)
Luminance	0.0027 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040131 #2E3101

analogous

#011631 #040131 #1C0131

triadic

#040131 #310401 #013104

tetradic

#040131 #310116 #2E3101 #01311C

square

#040131 #310116 #2E3101 #01311C

split-complementary

#040131 #311C01 #163101

monochromatic

#02011E #02011E #040131 #09026D #0E03A9

Accessibility & contrast

On white

19.93

#040131 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.05

#040131 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040131

19.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040131	#FFFFFF	#000000	##FFFFFF
##040131	1.00	19.93	1.05	19.93
#FFFFFF	19.93	1.00	21.00	1.00
#000000	1.05	21.00	1.00	21.00
##FFFFFF	19.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000B32

Deuteranopia (green-blind)

#000730

Tritanopia (blue-blind)

#000F19

Achromatopsia (no color)

#090909

Design tokens & code

CSS

--color: #040131;
/* rgb */ color: rgb(4, 1, 49);
/* oklch */ color: oklch(15.0% 0.093 271.6);

Tailwind

colors: {
  custom: {
    50: '#4a4769',
    500: '#040131',
    950: '#000000',
  },
}

SCSS

$custom: #040131;
$custom-light: #4a4769;
$custom-dark: #000000;

JSON

{
  "hex": "#040131",
  "rgb": {
    "r": 4,
    "g": 1,
    "b": 49
  },
  "hsl": {
    "h": 243.75,
    "s": 96,
    "l": 9.804
  },
  "oklch": {
    "l": 0.14989,
    "c": 0.09272,
    "h": 271.6
  },
  "luminance": 0.00269
}

Semantic roles & 50–950 ramp

primary

#040131

secondary

#717717

accent

#FF29F2

background

#F4F3F6

surface

#E7E5EB

border

#C3C1C6

text

#010006

muted

#77777A

Preview Lab

Preview with #040131

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

Preview Lab → · Contrast checker → · Palette generator →