#04153A#04153A

#04153A is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 20.9% C 0.076 H 262.1°. Best body text is #FFFFFF at 17.89:1 contrast (WCAG AA passes).

Color values

HEX	#04153A
RGB	rgb(4, 21, 58)
HSL	hsl(221, 87%, 12%)
HSV	hsv(221, 93%, 23%)
CMYK	cmyk(93.1%, 63.8%, 0%, 77.3%)
CIE-LAB	lab(7.84, 9.73, -26.01)
CIE-LCH	lch(7.84, 27.77, 290.50°)
OKLab	oklab(20.89% -0.0105 -0.0751)
OKLCH	oklch(20.89% 0.076 262.1)
XYZ	xyz(1.0817, 0.8675, 4.1126)
Luminance	0.0087 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04153A #3A2904

analogous

#04303A #04153A #0E043A

triadic

#04153A #3A0415 #153A04

tetradic

#04153A #3A0430 #3A2904 #043A0E

square

#04153A #3A0430 #3A2904 #043A0E

split-complementary

#04153A #3A0E04 #303A04

monochromatic

#020A1D #020A1D #04153A #082A73 #0C3EAD

Accessibility & contrast

On white

17.89

#04153A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#04153A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04153A

17.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04153A	#FFFFFF	#000000	##FFFFFF
##04153A	1.00	17.89	1.17	17.89
#FFFFFF	17.89	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001A3B

Deuteranopia (green-blind)

#001539

Tritanopia (blue-blind)

#001E24

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #04153a;
/* rgb */ color: rgb(4, 21, 58);
/* oklch */ color: oklch(20.9% 0.076 262.1);

Tailwind

colors: {
  custom: {
    50: '#4f5170',
    500: '#04153a',
    950: '#000000',
  },
}

SCSS

$custom: #04153a;
$custom-light: #4f5170;
$custom-dark: #000000;

JSON

{
  "hex": "#04153a",
  "rgb": {
    "r": 4,
    "g": 21,
    "b": 58
  },
  "hsl": {
    "h": 221.111,
    "s": 87.097,
    "l": 12.157
  },
  "oklch": {
    "l": 0.20887,
    "c": 0.07582,
    "h": 262.1
  },
  "luminance": 0.00868
}

Semantic roles & 50–950 ramp

primary

#04153A

secondary

#7C5E1E

accent

#BB2BFD

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020207

muted

#78787A

Preview Lab

Preview with #04153A

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

Preview Lab → · Contrast checker → · Palette generator →