#04103A#04103A

#04103A is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 19.7% C 0.083 H 265.3°. Best body text is #FFFFFF at 18.41:1 contrast (WCAG AA passes).

Color values

HEX	#04103A
RGB	rgb(4, 16, 58)
HSL	hsl(227, 87%, 12%)
HSV	hsv(227, 93%, 23%)
CMYK	cmyk(93.1%, 72.4%, 0%, 77.3%)
CIE-LAB	lab(6.34, 13.23, -28.44)
CIE-LCH	lch(6.34, 31.36, 294.94°)
OKLab	oklab(19.67% -0.0069 -0.083)
OKLCH	oklch(19.67% 0.083 265.3)
XYZ	xyz(0.9988, 0.7018, 4.0850)
Luminance	0.0070 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04103A #3A2E04

analogous

#042B3A #04103A #13043A

triadic

#04103A #3A0410 #103A04

tetradic

#04103A #3A042B #3A2E04 #043A13

square

#04103A #3A042B #3A2E04 #043A13

split-complementary

#04103A #3A1304 #2B3A04

monochromatic

#02081D #02081D #04103A #082073 #0C30AD

Accessibility & contrast

On white

18.41

#04103A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#04103A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04103A

18.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04103A	#FFFFFF	#000000	##FFFFFF
##04103A	1.00	18.41	1.14	18.41
#FFFFFF	18.41	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00173B

Deuteranopia (green-blind)

#001239

Tritanopia (blue-blind)

#001B23

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #04103a;
/* rgb */ color: rgb(4, 16, 58);
/* oklch */ color: oklch(19.7% 0.083 265.3);

Tailwind

colors: {
  custom: {
    50: '#4f4e71',
    500: '#04103a',
    950: '#000000',
  },
}

SCSS

$custom: #04103a;
$custom-light: #4f4e71;
$custom-dark: #000000;

JSON

{
  "hex": "#04103a",
  "rgb": {
    "r": 4,
    "g": 16,
    "b": 58
  },
  "hsl": {
    "h": 226.667,
    "s": 87.097,
    "l": 12.157
  },
  "oklch": {
    "l": 0.19668,
    "c": 0.08326,
    "h": 265.3
  },
  "luminance": 0.00702
}

Semantic roles & 50–950 ramp

primary

#04103A

secondary

#7C671E

accent

#CE2BFD

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020107

muted

#78777A

Preview Lab

Preview with #04103A

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

Preview Lab → · Contrast checker → · Palette generator →