#04193B#04193B

#04193B is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.0% C 0.071 H 259.0°. Best body text is #FFFFFF at 17.39:1 contrast (WCAG AA passes).

Color values

HEX	#04193B
RGB	rgb(4, 25, 59)
HSL	hsl(217, 87%, 12%)
HSV	hsv(217, 93%, 23%)
CMYK	cmyk(93.2%, 57.6%, 0%, 76.9%)
CIE-LAB	lab(9.29, 6.97, -24.36)
CIE-LCH	lch(9.29, 25.34, 285.97°)
OKLab	oklab(22.03% -0.0137 -0.0702)
OKLCH	oklch(22.03% 0.071 259)
XYZ	xyz(1.1868, 1.0367, 4.2744)
Luminance	0.0104 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04193B #3B2604

analogous

#04353B #04193B #0B043B

triadic

#04193B #3B0419 #193B04

tetradic

#04193B #3B0435 #3B2604 #043B0B

square

#04193B #3B0435 #3B2604 #043B0B

split-complementary

#04193B #3B0B04 #353B04

monochromatic

#020C1D #020C1D #04193B #083174 #0C4AAE

Accessibility & contrast

On white

17.39

#04193B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#04193B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04193B

17.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04193B	#FFFFFF	#000000	##FFFFFF
##04193B	1.00	17.39	1.21	17.39
#FFFFFF	17.39	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#051D3C

Deuteranopia (green-blind)

#00183A

Tritanopia (blue-blind)

#002127

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #04193b;
/* rgb */ color: rgb(4, 25, 59);
/* oklch */ color: oklch(22.0% 0.071 259.0);

Tailwind

colors: {
  custom: {
    50: '#4f5571',
    500: '#04193b',
    950: '#000000',
  },
}

SCSS

$custom: #04193b;
$custom-light: #4f5571;
$custom-dark: #000000;

JSON

{
  "hex": "#04193b",
  "rgb": {
    "r": 4,
    "g": 25,
    "b": 59
  },
  "hsl": {
    "h": 217.091,
    "s": 87.302,
    "l": 12.353
  },
  "oklch": {
    "l": 0.22026,
    "c": 0.07148,
    "h": 259
  },
  "luminance": 0.01037
}

Semantic roles & 50–950 ramp

primary

#04193B

secondary

#7D591E

accent

#AD2AFD

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020207

muted

#78787A

Preview Lab

Preview with #04193B

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

Preview Lab → · Contrast checker → · Palette generator →