#04212D#04212D

#04212D is a very dark, muted cyan. Relative luminance 0.013; OKLCH L 23.3% C 0.041 H 229.3°. Best body text is #FFFFFF at 16.66:1 contrast (WCAG AA passes).

Color values

HEX	#04212D
RGB	rgb(4, 33, 45)
HSL	hsl(198, 84%, 10%)
HSV	hsv(198, 91%, 18%)
CMYK	cmyk(91.1%, 26.7%, 0%, 82.4%)
CIE-LAB	lab(11.30, -5.68, -11.10)
CIE-LCH	lch(11.30, 12.47, 242.87°)
OKLab	oklab(23.29% -0.0268 -0.0312)
OKLCH	oklch(23.29% 0.041 229.3)
XYZ	xyz(1.0674, 1.3029, 2.6773)
Luminance	0.0130 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04212D #2D1004

analogous

#042D25 #04212D #040D2D

triadic

#04212D #2D0421 #212D04

tetradic

#04212D #25042D #2D1004 #0D2D04

square

#04212D #25042D #2D1004 #0D2D04

split-complementary

#04212D #2D040D #2D2504

monochromatic

#02151C #02151C #04212D #094A65 #0E739D

Accessibility & contrast

On white

16.66

#04212D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#04212D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04212D

16.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04212D	#FFFFFF	#000000	##FFFFFF
##04212D	1.00	16.66	1.26	16.66
#FFFFFF	16.66	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B202E

Deuteranopia (green-blind)

#151C2D

Tritanopia (blue-blind)

#002425

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #04212d;
/* rgb */ color: rgb(4, 33, 45);
/* oklch */ color: oklch(23.3% 0.041 229.3);

Tailwind

colors: {
  custom: {
    50: '#4b5c66',
    500: '#04212d',
    950: '#000000',
  },
}

SCSS

$custom: #04212d;
$custom-light: #4b5c66;
$custom-dark: #000000;

JSON

{
  "hex": "#04212d",
  "rgb": {
    "r": 4,
    "g": 33,
    "b": 45
  },
  "hsl": {
    "h": 197.561,
    "s": 83.673,
    "l": 9.608
  },
  "oklch": {
    "l": 0.23286,
    "c": 0.04115,
    "h": 229.3
  },
  "luminance": 0.01303
}

Semantic roles & 50–950 ramp

primary

#04212D

secondary

#70351D

accent

#6A2EFA

background

#F4F5F6

surface

#E7E9EB

border

#C3C5C6

text

#010405

muted

#77797A

Preview Lab

Preview with #04212D

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

Preview Lab → · Contrast checker → · Palette generator →