#040729#040729

#040729 is a very dark, moderate blue. Relative luminance 0.003; OKLCH L 15.5% C 0.069 H 270.2°. Best body text is #FFFFFF at 19.67:1 contrast (WCAG AA passes).

Color values

HEX	#040729
RGB	rgb(4, 7, 41)
HSL	hsl(235, 82%, 9%)
HSV	hsv(235, 90%, 16%)
CMYK	cmyk(90.2%, 82.9%, 0%, 83.9%)
CIE-LAB	lab(3.05, 8.40, -21.08)
CIE-LCH	lch(3.05, 22.70, 291.73°)
OKLab	oklab(15.55% 0.0002 -0.0692)
OKLCH	oklch(15.55% 0.069 270.2)
XYZ	xyz(0.5262, 0.3378, 2.1349)
Luminance	0.0034 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.15

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040729 #292604

analogous

#041A29 #040729 #140429

triadic

#040729 #290407 #072904

tetradic

#040729 #29041A #292604 #042914

square

#040729 #29041A #292604 #042914

split-complementary

#040729 #291404 #1A2904

monochromatic

#03051C #03051C #040729 #091161 #0F1A99

Accessibility & contrast

On white

19.67

#040729 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.07

#040729 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040729

19.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040729	#FFFFFF	#000000	##FFFFFF
##040729	1.00	19.67	1.07	19.67
#FFFFFF	19.67	1.00	21.00	1.00
#000000	1.07	21.00	1.00	21.00
##FFFFFF	19.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000D2A

Deuteranopia (green-blind)

#000928

Tritanopia (blue-blind)

#001016

Achromatopsia (no color)

#0B0B0B

Design tokens & code

CSS

--color: #040729;
/* rgb */ color: rgb(4, 7, 41);
/* oklch */ color: oklch(15.5% 0.069 270.2);

Tailwind

colors: {
  custom: {
    50: '#494a63',
    500: '#040729',
    950: '#000000',
  },
}

SCSS

$custom: #040729;
$custom-light: #494a63;
$custom-dark: #000000;

JSON

{
  "hex": "#040729",
  "rgb": {
    "r": 4,
    "g": 7,
    "b": 41
  },
  "hsl": {
    "h": 235.135,
    "s": 82.222,
    "l": 8.824
  },
  "oklch": {
    "l": 0.15546,
    "c": 0.06921,
    "h": 270.2
  },
  "luminance": 0.00338
}

Semantic roles & 50–950 ramp

primary

#040729

secondary

#6C651D

accent

#E82FF9

background

#F4F4F5

surface

#E7E7EA

border

#C3C3C6

text

#010105

muted

#777779

Preview Lab

Preview with #040729

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

Preview Lab → · Contrast checker → · Palette generator →