#040631#040631

#040631 is a very dark, moderate blue. Relative luminance 0.004; OKLCH L 16.3% C 0.084 H 269.9°. Best body text is #FFFFFF at 19.52:1 contrast (WCAG AA passes).

Color values

HEX	#040631
RGB	rgb(4, 6, 49)
HSL	hsl(237, 85%, 10%)
HSV	hsv(237, 92%, 19%)
CMYK	cmyk(91.8%, 87.8%, 0%, 80.8%)
CIE-LAB	lab(3.41, 12.72, -26.55)
CIE-LCH	lch(3.41, 29.44, 295.59°)
OKLab	oklab(16.33% -0.0002 -0.0836)
OKLCH	oklch(16.33% 0.084 269.9)
XYZ	xyz(0.6694, 0.3777, 2.9428)
Luminance	0.0038 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040631 #312F04

analogous

#041C31 #040631 #180431

triadic

#040631 #310406 #063104

tetradic

#040631 #31041C #312F04 #043118

square

#040631 #31041C #312F04 #043118

split-complementary

#040631 #311804 #1C3104

monochromatic

#02031C #02031C #040631 #090D6A #0D14A2

Accessibility & contrast

On white

19.52

#040631 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.08

#040631 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040631

19.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040631	#FFFFFF	#000000	##FFFFFF
##040631	1.00	19.52	1.08	19.52
#FFFFFF	19.52	1.00	21.00	1.00
#000000	1.08	21.00	1.00	21.00
##FFFFFF	19.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000F32

Deuteranopia (green-blind)

#000A30

Tritanopia (blue-blind)

#00121A

Achromatopsia (no color)

#0C0C0C

Design tokens & code

CSS

--color: #040631;
/* rgb */ color: rgb(4, 6, 49);
/* oklch */ color: oklch(16.3% 0.084 269.9);

Tailwind

colors: {
  custom: {
    50: '#4b4969',
    500: '#040631',
    950: '#000000',
  },
}

SCSS

$custom: #040631;
$custom-light: #4b4969;
$custom-dark: #000000;

JSON

{
  "hex": "#040631",
  "rgb": {
    "r": 4,
    "g": 6,
    "b": 49
  },
  "hsl": {
    "h": 237.333,
    "s": 84.906,
    "l": 10.392
  },
  "oklch": {
    "l": 0.16327,
    "c": 0.08363,
    "h": 269.9
  },
  "luminance": 0.00378
}

Semantic roles & 50–950 ramp

primary

#040631

secondary

#73701D

accent

#F22DFB

background

#F4F4F6

surface

#E7E6EB

border

#C3C2C6

text

#010006

muted

#77777A

Preview Lab

Preview with #040631

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

Preview Lab → · Contrast checker → · Palette generator →