#040A22#040A22

#040A22 is a very dark, muted blue. Relative luminance 0.004; OKLCH L 15.6% C 0.052 H 266.9°. Best body text is #FFFFFF at 19.60:1 contrast (WCAG AA passes).

Color values

HEX	#040A22
RGB	rgb(4, 10, 34)
HSL	hsl(228, 79%, 7%)
HSV	hsv(228, 88%, 13%)
CMYK	cmyk(88.2%, 70.6%, 0%, 86.7%)
CIE-LAB	lab(3.24, 4.37, -15.40)
CIE-LCH	lch(3.24, 16.00, 285.84°)
OKLab	oklab(15.57% -0.0028 -0.0517)
OKLCH	oklch(15.57% 0.052 266.9)
XYZ	xyz(0.4472, 0.3583, 1.5587)
Luminance	0.0036 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 8.56

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040A22 #221C04

analogous

#041922 #040A22 #0D0422

triadic

#040A22 #22040A #0A2204

tetradic

#040A22 #220419 #221C04 #04220D

square

#040A22 #220419 #221C04 #04220D

split-complementary

#040A22 #220D04 #192204

monochromatic

#03081B #03081B #040A22 #0A1A59 #112A90

Accessibility & contrast

On white

19.60

#040A22 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.07

#040A22 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040A22

19.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040A22	#FFFFFF	#000000	##FFFFFF
##040A22	1.00	19.60	1.07	19.60
#FFFFFF	19.60	1.00	21.00	1.00
#000000	1.07	21.00	1.00	21.00
##FFFFFF	19.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000D23

Deuteranopia (green-blind)

#000A22

Tritanopia (blue-blind)

#001014

Achromatopsia (no color)

#0C0C0C

Design tokens & code

CSS

--color: #040a22;
/* rgb */ color: rgb(4, 10, 34);
/* oklch */ color: oklch(15.6% 0.052 266.9);

Tailwind

colors: {
  custom: {
    50: '#484b5d',
    500: '#040a22',
    950: '#000000',
  },
}

SCSS

$custom: #040a22;
$custom-light: #484b5d;
$custom-dark: #000000;

JSON

{
  "hex": "#040a22",
  "rgb": {
    "r": 4,
    "g": 10,
    "b": 34
  },
  "hsl": {
    "h": 228,
    "s": 78.947,
    "l": 7.451
  },
  "oklch": {
    "l": 0.15569,
    "c": 0.05173,
    "h": 266.9
  },
  "luminance": 0.00358
}

Semantic roles & 50–950 ramp

primary

#040A22

secondary

#65561D

accent

#CE32F5

background

#F4F4F5

surface

#E6E7E9

border

#C2C3C5

text

#000104

muted

#777779

Preview Lab

Preview with #040A22

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

Preview Lab → · Contrast checker → · Palette generator →