#173E66#173E66

#173E66 is a dark, moderate cyan. Relative luminance 0.046; OKLCH L 35.8% C 0.082 H 251.7°. Best body text is #FFFFFF at 10.95:1 contrast (WCAG AA passes).

Color values

HEX	#173E66
RGB	rgb(23, 62, 102)
HSL	hsl(210, 63%, 25%)
HSV	hsv(210, 77%, 40%)
CMYK	cmyk(77.5%, 39.2%, 0%, 60%)
CIE-LAB	lab(25.52, 1.55, -27.44)
CIE-LCH	lch(25.52, 27.48, 273.23°)
OKLab	oklab(35.79% -0.0258 -0.0781)
OKLCH	oklch(35.79% 0.082 251.7)
XYZ	xyz(4.4733, 4.5862, 13.2173)
Luminance	0.0459 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173E66 #663F17

analogous

#176666 #173E66 #181766

triadic

#173E66 #66173E #3E6617

tetradic

#173E66 #661766 #663F17 #176618

square

#173E66 #661766 #663F17 #176618

split-complementary

#173E66 #661817 #666617

monochromatic

#060F19 #0C2034 #173E66 #225C98 #2E7BCA

Accessibility & contrast

On white

10.95

#173E66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#173E66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173E66

10.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173E66	#FFFFFF	#000000	##FFFFFF
##173E66	1.00	10.95	1.92	10.95
#FFFFFF	10.95	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C4068

Deuteranopia (green-blind)

#203965

Tritanopia (blue-blind)

#00474D

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #173e66;
/* rgb */ color: rgb(23, 62, 102);
/* oklch */ color: oklch(35.8% 0.082 251.7);

Tailwind

colors: {
  custom: {
    50: '#607292',
    500: '#173e66',
    950: '#000000',
  },
}

SCSS

$custom: #173e66;
$custom-light: #607292;
$custom-dark: #000000;

JSON

{
  "hex": "#173e66",
  "rgb": {
    "r": 23,
    "g": 62,
    "b": 102
  },
  "hsl": {
    "h": 210.38,
    "s": 63.2,
    "l": 24.51
  },
  "oklch": {
    "l": 0.35791,
    "c": 0.08227,
    "h": 251.7
  },
  "luminance": 0.04587
}

Semantic roles & 50–950 ramp

primary

#173E66

secondary

#9C6D3C

accent

#9542E6

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#05080D

muted

#7A7B7E

Preview Lab

Preview with #173E66

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

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