#041739#041739

#041739 is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.3% C 0.071 H 260.1°. Best body text is #FFFFFF at 17.69:1 contrast (WCAG AA passes).

Color values

HEX	#041739
RGB	rgb(4, 23, 57)
HSL	hsl(218, 87%, 12%)
HSV	hsv(218, 93%, 22%)
CMYK	cmyk(93%, 59.6%, 0%, 77.6%)
CIE-LAB	lab(8.43, 7.62, -24.33)
CIE-LCH	lch(8.43, 25.49, 287.40°)
OKLab	oklab(21.31% -0.0123 -0.0701)
OKLCH	oklch(21.31% 0.071 260.1)
XYZ	xyz(1.0947, 0.9339, 3.9927)
Luminance	0.0093 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#041739 #392604

analogous

#043239 #041739 #0C0439

triadic

#041739 #390417 #173904

tetradic

#041739 #390432 #392604 #04390C

square

#041739 #390432 #392604 #04390C

split-complementary

#041739 #390C04 #323904

monochromatic

#020C1D #020C1D #041739 #082E72 #0C45AB

Accessibility & contrast

On white

17.69

#041739 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#041739 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #041739

17.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##041739	#FFFFFF	#000000	##FFFFFF
##041739	1.00	17.69	1.19	17.69
#FFFFFF	17.69	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#031B3A

Deuteranopia (green-blind)

#001638

Tritanopia (blue-blind)

#001F25

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #041739;
/* rgb */ color: rgb(4, 23, 57);
/* oklch */ color: oklch(21.3% 0.071 260.1);

Tailwind

colors: {
  custom: {
    50: '#4e5370',
    500: '#041739',
    950: '#000000',
  },
}

SCSS

$custom: #041739;
$custom-light: #4e5370;
$custom-dark: #000000;

JSON

{
  "hex": "#041739",
  "rgb": {
    "r": 4,
    "g": 23,
    "b": 57
  },
  "hsl": {
    "h": 218.491,
    "s": 86.885,
    "l": 11.961
  },
  "oklch": {
    "l": 0.21309,
    "c": 0.07116,
    "h": 260.1
  },
  "luminance": 0.00934
}

Semantic roles & 50–950 ramp

primary

#041739

secondary

#7B5A1E

accent

#B22BFD

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020207

muted

#78787A

Preview Lab

Preview with #041739

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

Preview Lab → · Contrast checker → · Palette generator →