#040F22#040F22

#040F22 is a very dark, muted blue. Relative luminance 0.005; OKLCH L 17.0% C 0.044 H 258.5°. Best body text is #FFFFFF at 19.15:1 contrast (WCAG AA passes).

Color values

HEX	#040F22
RGB	rgb(4, 15, 34)
HSL	hsl(218, 79%, 7%)
HSV	hsv(218, 88%, 13%)
CMYK	cmyk(88.2%, 55.9%, 0%, 86.7%)
CIE-LAB	lab(4.36, 2.07, -13.67)
CIE-LCH	lch(4.36, 13.82, 278.61°)
OKLab	oklab(16.99% -0.0087 -0.0428)
OKLCH	oklch(16.99% 0.044 258.5)
XYZ	xyz(0.5095, 0.4829, 1.5794)
Luminance	0.0048 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040F22 #221704

analogous

#041E22 #040F22 #080422

triadic

#040F22 #22040F #0F2204

tetradic

#040F22 #22041E #221704 #042208

square

#040F22 #22041E #221704 #042208

split-complementary

#040F22 #220804 #1E2204

monochromatic

#030C1B #030C1B #040F22 #0A2759 #113F90

Accessibility & contrast

On white

19.15

#040F22 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#040F22 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040F22

19.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040F22	#FFFFFF	#000000	##FFFFFF
##040F22	1.00	19.15	1.10	19.15
#FFFFFF	19.15	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#061123

Deuteranopia (green-blind)

#030E22

Tritanopia (blue-blind)

#001316

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #040f22;
/* rgb */ color: rgb(4, 15, 34);
/* oklch */ color: oklch(17.0% 0.044 258.5);

Tailwind

colors: {
  custom: {
    50: '#484e5d',
    500: '#040f22',
    950: '#000000',
  },
}

SCSS

$custom: #040f22;
$custom-light: #484e5d;
$custom-dark: #000000;

JSON

{
  "hex": "#040f22",
  "rgb": {
    "r": 4,
    "g": 15,
    "b": 34
  },
  "hsl": {
    "h": 218,
    "s": 78.947,
    "l": 7.451
  },
  "oklch": {
    "l": 0.16989,
    "c": 0.04365,
    "h": 258.5
  },
  "luminance": 0.00483
}

Semantic roles & 50–950 ramp

primary

#040F22

secondary

#654A1D

accent

#AE32F5

background

#F4F4F5

surface

#E6E7E9

border

#C2C3C5

text

#000104

muted

#777779

Preview Lab

Preview with #040F22

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

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