#04172C#04172C

#04172C is a very dark, muted cyan. Relative luminance 0.008; OKLCH L 20.2% C 0.049 H 252.0°. Best body text is #FFFFFF at 18.04:1 contrast (WCAG AA passes).

Color values

HEX	#04172C
RGB	rgb(4, 23, 44)
HSL	hsl(212, 83%, 9%)
HSV	hsv(212, 91%, 17%)
CMYK	cmyk(90.9%, 47.7%, 0%, 82.7%)
CIE-LAB	lab(7.41, 1.28, -16.47)
CIE-LCH	lch(7.41, 16.52, 274.43°)
OKLab	oklab(20.18% -0.0153 -0.0471)
OKLCH	oklch(20.18% 0.049 252)
XYZ	xyz(0.8109, 0.8204, 2.4980)
Luminance	0.0082 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04172C #2C1904

analogous

#042B2C #04172C #05042C

triadic

#04172C #2C0417 #172C04

tetradic

#04172C #2C042B #2C1904 #042C05

square

#04172C #2C042B #2C1904 #042C05

split-complementary

#04172C #2C0504 #2B2C04

monochromatic

#030F1C #030F1C #04172C #093464 #0E529C

Accessibility & contrast

On white

18.04

#04172C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#04172C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04172C

18.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04172C	#FFFFFF	#000000	##FFFFFF
##04172C	1.00	18.04	1.16	18.04
#FFFFFF	18.04	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D182D

Deuteranopia (green-blind)

#07152C

Tritanopia (blue-blind)

#001C1F

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #04172c;
/* rgb */ color: rgb(4, 23, 44);
/* oklch */ color: oklch(20.2% 0.049 252.0);

Tailwind

colors: {
  custom: {
    50: '#4a5365',
    500: '#04172c',
    950: '#000000',
  },
}

SCSS

$custom: #04172c;
$custom-light: #4a5365;
$custom-dark: #000000;

JSON

{
  "hex": "#04172c",
  "rgb": {
    "r": 4,
    "g": 23,
    "b": 44
  },
  "hsl": {
    "h": 211.5,
    "s": 83.333,
    "l": 9.412
  },
  "oklch": {
    "l": 0.2018,
    "c": 0.04948,
    "h": 252
  },
  "luminance": 0.0082
}

Semantic roles & 50–950 ramp

primary

#04172C

secondary

#6F481D

accent

#992EFA

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010205

muted

#77787A

Preview Lab

Preview with #04172C

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

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