#173655#173655

#173655 is a dark, moderate cyan. Relative luminance 0.035; OKLCH L 32.6% C 0.067 H 250.6°. Best body text is #FFFFFF at 12.39:1 contrast (WCAG AA passes).

Color values

HEX	#173655
RGB	rgb(23, 54, 85)
HSL	hsl(210, 57%, 21%)
HSV	hsv(210, 73%, 33%)
CMYK	cmyk(72.9%, 36.5%, 0%, 66.7%)
CIE-LAB	lab(21.86, 0.13, -22.14)
CIE-LCH	lch(21.86, 22.14, 270.33°)
OKLab	oklab(32.59% -0.0221 -0.0627)
OKLCH	oklch(32.59% 0.067 250.6)
XYZ	xyz(3.3116, 3.4760, 9.0890)
Luminance	0.0348 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173655 #553617

analogous

#175555 #173655 #171755

triadic

#173655 #551736 #365517

tetradic

#173655 #551755 #553617 #175517

square

#173655 #551755 #553617 #175517

split-complementary

#173655 #551717 #555517

monochromatic

#070F18 #0A1725 #173655 #245585 #3173B5

Accessibility & contrast

On white

12.39

#173655 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#173655 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173655

12.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173655	#FFFFFF	#000000	##FFFFFF
##173655	1.00	12.39	1.70	12.39
#FFFFFF	12.39	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#283856

Deuteranopia (green-blind)

#203254

Tritanopia (blue-blind)

#003D41

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #173655;
/* rgb */ color: rgb(23, 54, 85);
/* oklch */ color: oklch(32.6% 0.067 250.6);

Tailwind

colors: {
  custom: {
    50: '#5c6c85',
    500: '#173655',
    950: '#000000',
  },
}

SCSS

$custom: #173655;
$custom-light: #5c6c85;
$custom-dark: #000000;

JSON

{
  "hex": "#173655",
  "rgb": {
    "r": 23,
    "g": 54,
    "b": 85
  },
  "hsl": {
    "h": 210,
    "s": 57.407,
    "l": 21.176
  },
  "oklch": {
    "l": 0.32593,
    "c": 0.06651,
    "h": 250.6
  },
  "luminance": 0.03476
}

Semantic roles & 50–950 ramp

primary

#173655

secondary

#8C643C

accent

#9447E1

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #173655

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

Preview Lab → · Contrast checker → · Palette generator →