#173F68#173F68

#173F68 is a dark, moderate cyan. Relative luminance 0.047; OKLCH L 36.2% C 0.084 H 251.8°. Best body text is #FFFFFF at 10.78:1 contrast (WCAG AA passes).

Color values

HEX	#173F68
RGB	rgb(23, 63, 104)
HSL	hsl(210, 64%, 25%)
HSV	hsv(210, 78%, 41%)
CMYK	cmyk(77.9%, 39.4%, 0%, 59.2%)
CIE-LAB	lab(25.97, 1.69, -28.01)
CIE-LCH	lch(25.97, 28.07, 273.45°)
OKLab	oklab(36.18% -0.0263 -0.0798)
OKLCH	oklch(36.18% 0.084 251.8)
XYZ	xyz(4.6286, 4.7361, 13.7642)
Luminance	0.0474 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173F68 #684017

analogous

#176868 #173F68 #171768

triadic

#173F68 #68173F #3F6817

tetradic

#173F68 #681768 #684017 #176817

square

#173F68 #681768 #684017 #176817

split-complementary

#173F68 #681717 #686817

monochromatic

#060F19 #0C2136 #173F68 #225D9A #2D7CCC

Accessibility & contrast

On white

10.78

#173F68 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#173F68 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173F68

10.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173F68	#FFFFFF	#000000	##FFFFFF
##173F68	1.00	10.78	1.95	10.78
#FFFFFF	10.78	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C426A

Deuteranopia (green-blind)

#203A67

Tritanopia (blue-blind)

#00494E

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #173f68;
/* rgb */ color: rgb(23, 63, 104);
/* oklch */ color: oklch(36.2% 0.084 251.8);

Tailwind

colors: {
  custom: {
    50: '#607393',
    500: '#173f68',
    950: '#000000',
  },
}

SCSS

$custom: #173f68;
$custom-light: #607393;
$custom-dark: #000000;

JSON

{
  "hex": "#173f68",
  "rgb": {
    "r": 23,
    "g": 63,
    "b": 104
  },
  "hsl": {
    "h": 210.37,
    "s": 63.78,
    "l": 24.902
  },
  "oklch": {
    "l": 0.3618,
    "c": 0.084,
    "h": 251.8
  },
  "luminance": 0.04737
}

Semantic roles & 50–950 ramp

primary

#173F68

secondary

#9E6E3D

accent

#9541E7

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#05080D

muted

#7A7B7E

Preview Lab

Preview with #173F68

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

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