#04213B#04213B

#04213B is a very dark, moderate cyan. Relative luminance 0.014; OKLCH L 24.2% C 0.060 H 249.3°. Best body text is #FFFFFF at 16.33:1 contrast (WCAG AA passes).

Color values

HEX	#04213B
RGB	rgb(4, 33, 59)
HSL	hsl(208, 87%, 12%)
HSV	hsv(208, 93%, 23%)
CMYK	cmyk(93.2%, 44.1%, 0%, 76.9%)
CIE-LAB	lab(12.15, 0.73, -19.78)
CIE-LCH	lch(12.15, 19.80, 272.12°)
OKLab	oklab(24.24% -0.0214 -0.0565)
OKLCH	oklch(24.24% 0.06 249.3)
XYZ	xyz(1.3830, 1.4291, 4.3398)
Luminance	0.0143 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04213B #3B1E04

analogous

#043B3A #04213B #04053B

triadic

#04213B #3B0421 #213B04

tetradic

#04213B #3A043B #3B1E04 #053B04

square

#04213B #3A043B #3B1E04 #053B04

split-complementary

#04213B #3B0405 #3B3A04

monochromatic

#02101D #02101D #04213B #084174 #0C61AE

Accessibility & contrast

On white

16.33

#04213B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#04213B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04213B

16.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04213B	#FFFFFF	#000000	##FFFFFF
##04213B	1.00	16.33	1.29	16.33
#FFFFFF	16.33	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#14233C

Deuteranopia (green-blind)

#0C1E3A

Tritanopia (blue-blind)

#00272B

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #04213b;
/* rgb */ color: rgb(4, 33, 59);
/* oklch */ color: oklch(24.2% 0.060 249.3);

Tailwind

colors: {
  custom: {
    50: '#4e5b71',
    500: '#04213b',
    950: '#000000',
  },
}

SCSS

$custom: #04213b;
$custom-light: #4e5b71;
$custom-dark: #000000;

JSON

{
  "hex": "#04213b",
  "rgb": {
    "r": 4,
    "g": 33,
    "b": 59
  },
  "hsl": {
    "h": 208.364,
    "s": 87.302,
    "l": 12.353
  },
  "oklch": {
    "l": 0.24243,
    "c": 0.06039,
    "h": 249.3
  },
  "luminance": 0.01429
}

Semantic roles & 50–950 ramp

primary

#04213B

secondary

#7D4B1E

accent

#8E2AFD

background

#F4F5F6

surface

#E7E9EC

border

#C3C5C7

text

#020407

muted

#78797A

Preview Lab

Preview with #04213B

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

Preview Lab → · Contrast checker → · Palette generator →