#04172F#04172F

#04172F is a very dark, muted cyan. Relative luminance 0.008; OKLCH L 20.4% C 0.054 H 254.7°. Best body text is #FFFFFF at 17.97:1 contrast (WCAG AA passes).

Color values

HEX	#04172F
RGB	rgb(4, 23, 47)
HSL	hsl(213, 84%, 10%)
HSV	hsv(213, 91%, 18%)
CMYK	cmyk(91.5%, 51.1%, 0%, 81.6%)
CIE-LAB	lab(7.62, 2.75, -18.35)
CIE-LCH	lch(7.62, 18.55, 278.53°)
OKLab	oklab(20.42% -0.0144 -0.0525)
OKLCH	oklch(20.42% 0.054 254.7)
XYZ	xyz(0.8694, 0.8437, 2.8058)
Luminance	0.0084 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04172F #2F1C04

analogous

#042D2F #04172F #06042F

triadic

#04172F #2F0417 #172F04

tetradic

#04172F #2F042D #2F1C04 #042F06

square

#04172F #2F042D #2F1C04 #042F06

split-complementary

#04172F #2F0604 #2D2F04

monochromatic

#020E1C #020E1C #04172F #093367 #0E4EA0

Accessibility & contrast

On white

17.97

#04172F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#04172F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04172F

17.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04172F	#FFFFFF	#000000	##FFFFFF
##04172F	1.00	17.97	1.17	17.97
#FFFFFF	17.97	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B1930

Deuteranopia (green-blind)

#04152F

Tritanopia (blue-blind)

#001D20

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #04172f;
/* rgb */ color: rgb(4, 23, 47);
/* oklch */ color: oklch(20.4% 0.054 254.7);

Tailwind

colors: {
  custom: {
    50: '#4b5367',
    500: '#04172f',
    950: '#000000',
  },
}

SCSS

$custom: #04172f;
$custom-light: #4b5367;
$custom-dark: #000000;

JSON

{
  "hex": "#04172f",
  "rgb": {
    "r": 4,
    "g": 23,
    "b": 47
  },
  "hsl": {
    "h": 213.488,
    "s": 84.314,
    "l": 10
  },
  "oklch": {
    "l": 0.20423,
    "c": 0.05448,
    "h": 254.7
  },
  "luminance": 0.00844
}

Semantic roles & 50–950 ramp

primary

#04172F

secondary

#724C1D

accent

#A02DFB

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010206

muted

#77787A

Preview Lab

Preview with #04172F

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

Preview Lab → · Contrast checker → · Palette generator →