#04050A#04050A

#04050A is a very dark, near-neutral blue. Relative luminance 0.002; OKLCH L 11.7% C 0.014 H 272.6°. Best body text is #FFFFFF at 20.36:1 contrast (WCAG AA passes).

Color values

HEX	#04050A
RGB	rgb(4, 5, 10)
HSL	hsl(230, 43%, 3%)
HSV	hsv(230, 60%, 4%)
CMYK	cmyk(60%, 50%, 0%, 96.1%)
CIE-LAB	lab(1.41, 0.43, -1.98)
CIE-LCH	lch(1.41, 2.03, 282.28°)
OKLab	oklab(11.65% 0.0006 -0.0142)
OKLCH	oklch(11.65% 0.014 272.6)
XYZ	xyz(0.1591, 0.1563, 0.3089)
Luminance	0.0016 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04050A #0A0904

analogous

#04080A #04050A #06040A

triadic

#04050A #0A0405 #050A04

tetradic

#04050A #0A0408 #0A0904 #040A06

square

#04050A #0A0408 #0A0904 #040A06

split-complementary

#04050A #0A0604 #080A04

monochromatic

#090B16 #090B16 #090B16 #151B36 #273161

Accessibility & contrast

On white

20.36

#04050A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.03

#04050A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04050A

20.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04050A	#FFFFFF	#000000	##FFFFFF
##04050A	1.00	20.36	1.03	20.36
#FFFFFF	20.36	1.00	21.00	1.00
#000000	1.03	21.00	1.00	21.00
##FFFFFF	20.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#04050A

Deuteranopia (green-blind)

#03050A

Tritanopia (blue-blind)

#030607

Achromatopsia (no color)

#050505

Design tokens & code

CSS

--color: #04050a;
/* rgb */ color: rgb(4, 5, 10);
/* oklch */ color: oklch(11.7% 0.014 272.6);

Tailwind

colors: {
  custom: {
    50: '#48494b',
    500: '#04050a',
    950: '#000000',
  },
}

SCSS

$custom: #04050a;
$custom-light: #48494b;
$custom-dark: #000000;

JSON

{
  "hex": "#04050a",
  "rgb": {
    "r": 4,
    "g": 5,
    "b": 10
  },
  "hsl": {
    "h": 230,
    "s": 42.857,
    "l": 2.745
  },
  "oklch": {
    "l": 0.11652,
    "c": 0.01417,
    "h": 272.6
  },
  "luminance": 0.00156
}

Semantic roles & 50–950 ramp

primary

#04050A

secondary

#453F25

accent

#BE55D3

background

#F4F4F4

surface

#E6E6E7

border

#C2C2C3

text

#000001

muted

#777777

Preview Lab

Preview with #04050A

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

Preview Lab → · Contrast checker → · Palette generator →