#04163B#04163B

#04163B is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.2% C 0.076 H 261.6°. Best body text is #FFFFFF at 17.75:1 contrast (WCAG AA passes).

Color values

HEX	#04163B
RGB	rgb(4, 22, 59)
HSL	hsl(220, 87%, 12%)
HSV	hsv(220, 93%, 23%)
CMYK	cmyk(93.2%, 62.7%, 0%, 76.9%)
CIE-LAB	lab(8.26, 9.40, -26.03)
CIE-LCH	lch(8.26, 27.67, 289.85°)
OKLab	oklab(21.24% -0.0111 -0.0751)
OKLCH	oklch(21.24% 0.076 261.6)
XYZ	xyz(1.1261, 0.9153, 4.2541)
Luminance	0.0092 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04163B #3B2904

analogous

#04313B #04163B #0E043B

triadic

#04163B #3B0416 #163B04

tetradic

#04163B #3B0431 #3B2904 #043B0E

square

#04163B #3B0431 #3B2904 #043B0E

split-complementary

#04163B #3B0E04 #313B04

monochromatic

#020B1D #020B1D #04163B #082B74 #0C41AE

Accessibility & contrast

On white

17.75

#04163B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#04163B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04163B

17.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04163B	#FFFFFF	#000000	##FFFFFF
##04163B	1.00	17.75	1.18	17.75
#FFFFFF	17.75	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001B3C

Deuteranopia (green-blind)

#00163A

Tritanopia (blue-blind)

#001F25

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #04163b;
/* rgb */ color: rgb(4, 22, 59);
/* oklch */ color: oklch(21.2% 0.076 261.6);

Tailwind

colors: {
  custom: {
    50: '#4f5271',
    500: '#04163b',
    950: '#000000',
  },
}

SCSS

$custom: #04163b;
$custom-light: #4f5271;
$custom-dark: #000000;

JSON

{
  "hex": "#04163b",
  "rgb": {
    "r": 4,
    "g": 22,
    "b": 59
  },
  "hsl": {
    "h": 220.364,
    "s": 87.302,
    "l": 12.353
  },
  "oklch": {
    "l": 0.21241,
    "c": 0.07595,
    "h": 261.6
  },
  "luminance": 0.00915
}

Semantic roles & 50–950 ramp

primary

#04163B

secondary

#7D5E1E

accent

#B82AFD

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020208

muted

#78787B

Preview Lab

Preview with #04163B

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

Preview Lab → · Contrast checker → · Palette generator →