#04152D#04152D

#04152D is a very dark, muted blue. Relative luminance 0.008; OKLCH L 19.7% C 0.054 H 256.3°. Best body text is #FFFFFF at 18.25:1 contrast (WCAG AA passes).

Color values

HEX	#04152D
RGB	rgb(4, 21, 45)
HSL	hsl(215, 84%, 10%)
HSV	hsv(215, 91%, 18%)
CMYK	cmyk(91.1%, 53.3%, 0%, 82.4%)
CIE-LAB	lab(6.79, 3.17, -18.19)
CIE-LCH	lch(6.79, 18.47, 279.89°)
OKLab	oklab(19.68% -0.0128 -0.0524)
OKLCH	oklch(19.68% 0.054 256.3)
XYZ	xyz(0.7917, 0.7515, 2.5854)
Luminance	0.0075 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04152D #2D1C04

analogous

#042A2D #04152D #08042D

triadic

#04152D #2D0415 #152D04

tetradic

#04152D #2D042A #2D1C04 #042D08

square

#04152D #2D042A #2D1C04 #042D08

split-complementary

#04152D #2D0804 #2A2D04

monochromatic

#020D1C #020D1C #04152D #092F65 #0E499D

Accessibility & contrast

On white

18.25

#04152D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#04152D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04152D

18.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04152D	#FFFFFF	#000000	##FFFFFF
##04152D	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)

#09172E

Deuteranopia (green-blind)

#03132D

Tritanopia (blue-blind)

#001B1E

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #04152d;
/* rgb */ color: rgb(4, 21, 45);
/* oklch */ color: oklch(19.7% 0.054 256.3);

Tailwind

colors: {
  custom: {
    50: '#4a5166',
    500: '#04152d',
    950: '#000000',
  },
}

SCSS

$custom: #04152d;
$custom-light: #4a5166;
$custom-dark: #000000;

JSON

{
  "hex": "#04152d",
  "rgb": {
    "r": 4,
    "g": 21,
    "b": 45
  },
  "hsl": {
    "h": 215.122,
    "s": 83.673,
    "l": 9.608
  },
  "oklch": {
    "l": 0.19679,
    "c": 0.05398,
    "h": 256.3
  },
  "luminance": 0.00752
}

Semantic roles & 50–950 ramp

primary

#04152D

secondary

#704D1D

accent

#A52EFA

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010206

muted

#77787A

Preview Lab

Preview with #04152D

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

Preview Lab → · Contrast checker → · Palette generator →