#04091F#04091F

#04091F is a very dark, muted blue. Relative luminance 0.003; OKLCH L 15.0% C 0.048 H 267.7°. Best body text is #FFFFFF at 19.74:1 contrast (WCAG AA passes).

Color values

HEX	#04091F
RGB	rgb(4, 9, 31)
HSL	hsl(229, 77%, 7%)
HSV	hsv(229, 87%, 12%)
CMYK	cmyk(87.1%, 71%, 0%, 87.8%)
CIE-LAB	lab(2.89, 3.72, -13.57)
CIE-LCH	lch(2.89, 14.07, 285.32°)
OKLab	oklab(14.98% -0.0019 -0.0479)
OKLCH	oklch(14.98% 0.048 267.7)
XYZ	xyz(0.3950, 0.3201, 1.3370)
Luminance	0.0032 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04091F #1F1A04

analogous

#04171F #04091F #0D041F

triadic

#04091F #1F0409 #091F04

tetradic

#04091F #1F0417 #1F1A04 #041F0D

square

#04091F #1F0417 #1F1A04 #041F0D

split-complementary

#04091F #1F0D04 #171F04

monochromatic

#03081B #03081B #04091F #0B1955 #12288B

Accessibility & contrast

On white

19.74

#04091F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.06

#04091F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04091F

19.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04091F	#FFFFFF	#000000	##FFFFFF
##04091F	1.00	19.74	1.06	19.74
#FFFFFF	19.74	1.00	21.00	1.00
#000000	1.06	21.00	1.00	21.00
##FFFFFF	19.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#010C20

Deuteranopia (green-blind)

#00091F

Tritanopia (blue-blind)

#000E12

Achromatopsia (no color)

#0B0B0B

Design tokens & code

CSS

--color: #04091f;
/* rgb */ color: rgb(4, 9, 31);
/* oklch */ color: oklch(15.0% 0.048 267.7);

Tailwind

colors: {
  custom: {
    50: '#484b5a',
    500: '#04091f',
    950: '#000000',
  },
}

SCSS

$custom: #04091f;
$custom-light: #484b5a;
$custom-dark: #000000;

JSON

{
  "hex": "#04091f",
  "rgb": {
    "r": 4,
    "g": 9,
    "b": 31
  },
  "hsl": {
    "h": 228.889,
    "s": 77.143,
    "l": 6.863
  },
  "oklch": {
    "l": 0.14984,
    "c": 0.04793,
    "h": 267.7
  },
  "luminance": 0.0032
}

Semantic roles & 50–950 ramp

primary

#04091F

secondary

#62551D

accent

#D034F4

background

#F4F4F5

surface

#E6E7E9

border

#C2C3C5

text

#000104

muted

#777779

Preview Lab

Preview with #04091F

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

Preview Lab → · Contrast checker → · Palette generator →