#04102D#04102D

#04102D is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 18.3% C 0.062 H 262.9°. Best body text is #FFFFFF at 18.80:1 contrast (WCAG AA passes).

Color values

HEX	#04102D
RGB	rgb(4, 16, 45)
HSL	hsl(222, 84%, 10%)
HSV	hsv(222, 91%, 18%)
CMYK	cmyk(91.1%, 64.4%, 0%, 82.4%)
CIE-LAB	lab(5.29, 6.23, -20.57)
CIE-LCH	lch(5.29, 21.49, 286.84°)
OKLab	oklab(18.29% -0.0076 -0.0611)
OKLCH	oklch(18.29% 0.062 262.9)
XYZ	xyz(0.7088, 0.5858, 2.5578)
Luminance	0.0059 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.17

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04102D #2D2104

analogous

#04252D #04102D #0D042D

triadic

#04102D #2D0410 #102D04

tetradic

#04102D #2D0425 #2D2104 #042D0D

square

#04102D #2D0425 #2D2104 #042D0D

split-complementary

#04102D #2D0D04 #252D04

monochromatic

#020A1C #020A1C #04102D #092465 #0E389D

Accessibility & contrast

On white

18.80

#04102D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.12

#04102D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04102D

18.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04102D	#FFFFFF	#000000	##FFFFFF
##04102D	1.00	18.80	1.12	18.80
#FFFFFF	18.80	1.00	21.00	1.00
#000000	1.12	21.00	1.00	21.00
##FFFFFF	18.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#01142E

Deuteranopia (green-blind)

#00102C

Tritanopia (blue-blind)

#00171C

Achromatopsia (no color)

#121212

Design tokens & code

CSS

--color: #04102d;
/* rgb */ color: rgb(4, 16, 45);
/* oklch */ color: oklch(18.3% 0.062 262.9);

Tailwind

colors: {
  custom: {
    50: '#4a4e66',
    500: '#04102d',
    950: '#000000',
  },
}

SCSS

$custom: #04102d;
$custom-light: #4a4e66;
$custom-dark: #000000;

JSON

{
  "hex": "#04102d",
  "rgb": {
    "r": 4,
    "g": 16,
    "b": 45
  },
  "hsl": {
    "h": 222.439,
    "s": 83.673,
    "l": 9.608
  },
  "oklch": {
    "l": 0.18289,
    "c": 0.06163,
    "h": 262.9
  },
  "luminance": 0.00586
}

Semantic roles & 50–950 ramp

primary

#04102D

secondary

#70571D

accent

#BE2EFA

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010106

muted

#77777A

Preview Lab

Preview with #04102D

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

Preview Lab → · Contrast checker → · Palette generator →