#04212F#04212F

#04212F is a very dark, muted cyan. Relative luminance 0.013; OKLCH L 23.4% C 0.043 H 233.4°. Best body text is #FFFFFF at 16.62:1 contrast (WCAG AA passes).

Color values

HEX	#04212F
RGB	rgb(4, 33, 47)
HSL	hsl(200, 84%, 10%)
HSV	hsv(200, 91%, 18%)
CMYK	cmyk(91.5%, 29.8%, 0%, 81.6%)
CIE-LAB	lab(11.40, -4.79, -12.37)
CIE-LCH	lch(11.40, 13.27, 248.82°)
OKLab	oklab(23.41% -0.0259 -0.0349)
OKLCH	oklch(23.41% 0.043 233.4)
XYZ	xyz(1.1068, 1.3186, 2.8850)
Luminance	0.0132 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04212F #2F1204

analogous

#042F28 #04212F #040B2F

triadic

#04212F #2F0421 #212F04

tetradic

#04212F #28042F #2F1204 #0B2F04

square

#04212F #28042F #2F1204 #0B2F04

split-complementary

#04212F #2F040B #2F2804

monochromatic

#02141C #02141C #04212F #094967 #0E70A0

Accessibility & contrast

On white

16.62

#04212F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#04212F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04212F

16.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04212F	#FFFFFF	#000000	##FFFFFF
##04212F	1.00	16.62	1.26	16.62
#FFFFFF	16.62	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A2130

Deuteranopia (green-blind)

#141C2F

Tritanopia (blue-blind)

#002526

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #04212f;
/* rgb */ color: rgb(4, 33, 47);
/* oklch */ color: oklch(23.4% 0.043 233.4);

Tailwind

colors: {
  custom: {
    50: '#4b5c67',
    500: '#04212f',
    950: '#000000',
  },
}

SCSS

$custom: #04212f;
$custom-light: #4b5c67;
$custom-dark: #000000;

JSON

{
  "hex": "#04212f",
  "rgb": {
    "r": 4,
    "g": 33,
    "b": 47
  },
  "hsl": {
    "h": 199.535,
    "s": 84.314,
    "l": 10
  },
  "oklch": {
    "l": 0.2341,
    "c": 0.04346,
    "h": 233.4
  },
  "luminance": 0.01319
}

Semantic roles & 50–950 ramp

primary

#04212F

secondary

#72391D

accent

#702DFB

background

#F4F5F6

surface

#E7E9EB

border

#C3C5C6

text

#010406

muted

#77797A

Preview Lab

Preview with #04212F

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

Preview Lab → · Contrast checker → · Palette generator →