#04103F#04103F

#04103F is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 20.2% C 0.091 H 265.6°. Best body text is #FFFFFF at 18.25:1 contrast (WCAG AA passes).

Color values

HEX	#04103F
RGB	rgb(4, 16, 63)
HSL	hsl(228, 88%, 13%)
HSV	hsv(228, 94%, 25%)
CMYK	cmyk(93.7%, 74.6%, 0%, 75.3%)
CIE-LAB	lab(6.82, 15.83, -31.25)
CIE-LCH	lch(6.82, 35.02, 296.86°)
OKLab	oklab(20.24% -0.007 -0.0908)
OKLCH	oklch(20.24% 0.091 265.6)
XYZ	xyz(1.1322, 0.7551, 4.7877)
Luminance	0.0076 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04103F #3F3304

analogous

#042D3F #04103F #15043F

triadic

#04103F #3F0410 #103F04

tetradic

#04103F #3F042D #3F3304 #043F15

square

#04103F #3F042D #3F3304 #043F15

split-complementary

#04103F #3F1504 #2D3F04

monochromatic

#02071D #02071D #04103F #081F79 #0B2DB2

Accessibility & contrast

On white

18.25

#04103F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#04103F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04103F

18.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04103F	#FFFFFF	#000000	##FFFFFF
##04103F	1.00	18.25	1.15	18.25
#FFFFFF	18.25	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001840

Deuteranopia (green-blind)

#00123E

Tritanopia (blue-blind)

#001D25

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #04103f;
/* rgb */ color: rgb(4, 16, 63);
/* oklch */ color: oklch(20.2% 0.091 265.6);

Tailwind

colors: {
  custom: {
    50: '#514d75',
    500: '#04103f',
    950: '#000000',
  },
}

SCSS

$custom: #04103f;
$custom-light: #514d75;
$custom-dark: #000000;

JSON

{
  "hex": "#04103f",
  "rgb": {
    "r": 4,
    "g": 16,
    "b": 63
  },
  "hsl": {
    "h": 227.797,
    "s": 88.06,
    "l": 13.137
  },
  "oklch": {
    "l": 0.20241,
    "c": 0.09112,
    "h": 265.6
  },
  "luminance": 0.00755
}

Semantic roles & 50–950 ramp

primary

#04103F

secondary

#806C1E

accent

#D32AFE

background

#F4F4F7

surface

#E7E7ED

border

#C3C3C8

text

#020108

muted

#78777B

Preview Lab

Preview with #04103F

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

Preview Lab → · Contrast checker → · Palette generator →