#04223B#04223B

#04223B is a very dark, muted cyan. Relative luminance 0.015; OKLCH L 24.5% C 0.059 H 247.8°. Best body text is #FFFFFF at 16.19:1 contrast (WCAG AA passes).

Color values

HEX	#04223B
RGB	rgb(4, 34, 59)
HSL	hsl(207, 87%, 12%)
HSV	hsv(207, 93%, 23%)
CMYK	cmyk(93.2%, 42.4%, 0%, 76.9%)
CIE-LAB	lab(12.52, -0.02, -19.20)
CIE-LCH	lch(12.52, 19.20, 269.94°)
OKLab	oklab(24.53% -0.0224 -0.0548)
OKLCH	oklch(24.53% 0.059 247.8)
XYZ	xyz(1.4112, 1.4855, 4.3492)
Luminance	0.0149 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04223B #3B1D04

analogous

#043B39 #04223B #04063B

triadic

#04223B #3B0422 #223B04

tetradic

#04223B #39043B #3B1D04 #063B04

square

#04223B #39043B #3B1D04 #063B04

split-complementary

#04223B #3B0406 #3B3904

monochromatic

#02111D #02111D #04223B #084374 #0C64AE

Accessibility & contrast

On white

16.19

#04223B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#04223B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04223B

16.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04223B	#FFFFFF	#000000	##FFFFFF
##04223B	1.00	16.19	1.30	16.19
#FFFFFF	16.19	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16233C

Deuteranopia (green-blind)

#0E1E3B

Tritanopia (blue-blind)

#00282B

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #04223b;
/* rgb */ color: rgb(4, 34, 59);
/* oklch */ color: oklch(24.5% 0.059 247.8);

Tailwind

colors: {
  custom: {
    50: '#4e5c71',
    500: '#04223b',
    950: '#000000',
  },
}

SCSS

$custom: #04223b;
$custom-light: #4e5c71;
$custom-dark: #000000;

JSON

{
  "hex": "#04223b",
  "rgb": {
    "r": 4,
    "g": 34,
    "b": 59
  },
  "hsl": {
    "h": 207.273,
    "s": 87.302,
    "l": 12.353
  },
  "oklch": {
    "l": 0.2453,
    "c": 0.05916,
    "h": 247.8
  },
  "luminance": 0.01486
}

Semantic roles & 50–950 ramp

primary

#04223B

secondary

#7D491E

accent

#8A2AFD

background

#F4F5F6

surface

#E7E9EC

border

#C3C5C7

text

#020407

muted

#78797A

Preview Lab

Preview with #04223B

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

Preview Lab → · Contrast checker → · Palette generator →