#040931#040931

#040931 is a very dark, moderate blue. Relative luminance 0.004; OKLCH L 17.0% C 0.079 H 268.5°. Best body text is #FFFFFF at 19.29:1 contrast (WCAG AA passes).

Color values

HEX	#040931
RGB	rgb(4, 9, 49)
HSL	hsl(233, 85%, 10%)
HSV	hsv(233, 92%, 19%)
CMYK	cmyk(91.8%, 81.6%, 0%, 80.8%)
CIE-LAB	lab(4.00, 11.51, -25.61)
CIE-LCH	lch(4.00, 28.08, 294.20°)
OKLab	oklab(17.04% -0.0021 -0.0789)
OKLCH	oklch(17.04% 0.079 268.5)
XYZ	xyz(0.7019, 0.4429, 2.9536)
Luminance	0.0044 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040931 #312C04

analogous

#041F31 #040931 #150431

triadic

#040931 #310409 #093104

tetradic

#040931 #31041F #312C04 #043115

square

#040931 #31041F #312C04 #043115

split-complementary

#040931 #311504 #1F3104

monochromatic

#02051C #02051C #040931 #09136A #0D1EA2

Accessibility & contrast

On white

19.29

#040931 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#040931 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040931

19.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040931	#FFFFFF	#000000	##FFFFFF
##040931	1.00	19.29	1.09	19.29
#FFFFFF	19.29	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001032

Deuteranopia (green-blind)

#000C30

Tritanopia (blue-blind)

#00141B

Achromatopsia (no color)

#0E0E0E

Design tokens & code

CSS

--color: #040931;
/* rgb */ color: rgb(4, 9, 49);
/* oklch */ color: oklch(17.0% 0.079 268.5);

Tailwind

colors: {
  custom: {
    50: '#4b4a69',
    500: '#040931',
    950: '#000000',
  },
}

SCSS

$custom: #040931;
$custom-light: #4b4a69;
$custom-dark: #000000;

JSON

{
  "hex": "#040931",
  "rgb": {
    "r": 4,
    "g": 9,
    "b": 49
  },
  "hsl": {
    "h": 233.333,
    "s": 84.906,
    "l": 10.392
  },
  "oklch": {
    "l": 0.17035,
    "c": 0.07895,
    "h": 268.5
  },
  "luminance": 0.00443
}

Semantic roles & 50–950 ramp

primary

#040931

secondary

#736A1D

accent

#E42DFB

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010106

muted

#77777A

Preview Lab

Preview with #040931

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

Preview Lab → · Contrast checker → · Palette generator →