#173D56#173D56

#173D56 is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.5% C 0.061 H 240.7°. Best body text is #FFFFFF at 11.42:1 contrast (WCAG AA passes).

Color values

HEX	#173D56
RGB	rgb(23, 61, 86)
HSL	hsl(204, 58%, 21%)
HSV	hsv(204, 73%, 34%)
CMYK	cmyk(73.3%, 29.1%, 0%, 66.3%)
CIE-LAB	lab(24.29, -4.20, -18.97)
CIE-LCH	lch(24.29, 19.43, 257.51°)
OKLab	oklab(34.53% -0.03 -0.0534)
OKLCH	oklch(34.53% 0.061 240.7)
XYZ	xyz(3.7012, 4.1911, 9.4162)
Luminance	0.0419 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173D56 #563017

analogous

#175650 #173D56 #171E56

triadic

#173D56 #56173D #3D5617

tetradic

#173D56 #501756 #563017 #1E5617

square

#173D56 #501756 #563017 #1E5617

split-complementary

#173D56 #56171E #565017

monochromatic

#061118 #0A1B26 #173D56 #245F86 #3181B7

Accessibility & contrast

On white

11.42

#173D56 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#173D56 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173D56

11.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173D56	#FFFFFF	#000000	##FFFFFF
##173D56	1.00	11.42	1.84	11.42
#FFFFFF	11.42	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#323D57

Deuteranopia (green-blind)

#293756

Tritanopia (blue-blind)

#004346

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173d56;
/* rgb */ color: rgb(23, 61, 86);
/* oklch */ color: oklch(34.5% 0.061 240.7);

Tailwind

colors: {
  custom: {
    50: '#5d7285',
    500: '#173d56',
    950: '#000000',
  },
}

SCSS

$custom: #173d56;
$custom-light: #5d7285;
$custom-dark: #000000;

JSON

{
  "hex": "#173d56",
  "rgb": {
    "r": 23,
    "g": 61,
    "b": 86
  },
  "hsl": {
    "h": 203.81,
    "s": 57.798,
    "l": 21.373
  },
  "oklch": {
    "l": 0.34531,
    "c": 0.06131,
    "h": 240.7
  },
  "luminance": 0.04192
}

Semantic roles & 50–950 ramp

primary

#173D56

secondary

#8D5C3C

accent

#8447E1

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #173D56

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

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