#04143F#04143F

#04143F is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.2% C 0.085 H 263.7°. Best body text is #FFFFFF at 17.84:1 contrast (WCAG AA passes).

Color values

HEX	#04143F
RGB	rgb(4, 20, 63)
HSL	hsl(224, 88%, 13%)
HSV	hsv(224, 94%, 25%)
CMYK	cmyk(93.7%, 68.3%, 0%, 75.3%)
CIE-LAB	lab(7.99, 12.91, -29.33)
CIE-LCH	lch(7.99, 32.05, 293.76°)
OKLab	oklab(21.16% -0.0094 -0.0849)
OKLCH	oklch(21.16% 0.085 263.7)
XYZ	xyz(1.1971, 0.8849, 4.8094)
Luminance	0.0089 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 3.94

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04143F #3F2F04

analogous

#04313F #04143F #11043F

triadic

#04143F #3F0414 #143F04

tetradic

#04143F #3F0431 #3F2F04 #043F11

square

#04143F #3F0431 #3F2F04 #043F11

split-complementary

#04143F #3F1104 #313F04

monochromatic

#02091D #02091D #04143F #082679 #0B39B2

Accessibility & contrast

On white

17.84

#04143F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#04143F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04143F

17.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04143F	#FFFFFF	#000000	##FFFFFF
##04143F	1.00	17.84	1.18	17.84
#FFFFFF	17.84	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001A40

Deuteranopia (green-blind)

#00153E

Tritanopia (blue-blind)

#001F27

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #04143f;
/* rgb */ color: rgb(4, 20, 63);
/* oklch */ color: oklch(21.2% 0.085 263.7);

Tailwind

colors: {
  custom: {
    50: '#505074',
    500: '#04143f',
    950: '#000000',
  },
}

SCSS

$custom: #04143f;
$custom-light: #505074;
$custom-dark: #000000;

JSON

{
  "hex": "#04143f",
  "rgb": {
    "r": 4,
    "g": 20,
    "b": 63
  },
  "hsl": {
    "h": 223.729,
    "s": 88.06,
    "l": 13.137
  },
  "oklch": {
    "l": 0.21157,
    "c": 0.08539,
    "h": 263.7
  },
  "luminance": 0.00885
}

Semantic roles & 50–950 ramp

primary

#04143F

secondary

#80661E

accent

#C52AFE

background

#F4F4F7

surface

#E7E7ED

border

#C3C3C8

text

#020208

muted

#78787B

Preview Lab

Preview with #04143F

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

Preview Lab → · Contrast checker → · Palette generator →