#173559#173559

#173559 is a dark, moderate cyan. Relative luminance 0.035; OKLCH L 32.6% C 0.074 H 254.4°. Best body text is #FFFFFF at 12.43:1 contrast (WCAG AA passes).

Color values

HEX	#173559
RGB	rgb(23, 53, 89)
HSL	hsl(213, 59%, 22%)
HSV	hsv(213, 74%, 35%)
CMYK	cmyk(74.2%, 40.4%, 0%, 65.1%)
CIE-LAB	lab(21.76, 2.45, -24.93)
CIE-LCH	lch(21.76, 25.05, 275.62°)
OKLab	oklab(32.59% -0.0197 -0.0709)
OKLCH	oklch(32.59% 0.074 254.4)
XYZ	xyz(3.4290, 3.4493, 9.9343)
Luminance	0.0345 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173559 #593B17

analogous

#175659 #173559 #1A1759

triadic

#173559 #591735 #355917

tetradic

#173559 #591756 #593B17 #17591A

square

#173559 #591756 #593B17 #17591A

split-complementary

#173559 #591A17 #565917

monochromatic

#060E18 #0A1828 #173559 #24528A #306FBA

Accessibility & contrast

On white

12.43

#173559 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#173559 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173559

12.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173559	#FFFFFF	#000000	##FFFFFF
##173559	1.00	12.43	1.69	12.43
#FFFFFF	12.43	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#25385A

Deuteranopia (green-blind)

#1B3158

Tritanopia (blue-blind)

#003D42

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #173559;
/* rgb */ color: rgb(23, 53, 89);
/* oklch */ color: oklch(32.6% 0.074 254.4);

Tailwind

colors: {
  custom: {
    50: '#5d6b88',
    500: '#173559',
    950: '#000000',
  },
}

SCSS

$custom: #173559;
$custom-light: #5d6b88;
$custom-dark: #000000;

JSON

{
  "hex": "#173559",
  "rgb": {
    "r": 23,
    "g": 53,
    "b": 89
  },
  "hsl": {
    "h": 212.727,
    "s": 58.929,
    "l": 21.961
  },
  "oklch": {
    "l": 0.32594,
    "c": 0.07362,
    "h": 254.4
  },
  "luminance": 0.0345
}

Semantic roles & 50–950 ramp

primary

#173559

secondary

#906A3C

accent

#9B46E2

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#05060B

muted

#797A7C

Preview Lab

Preview with #173559

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

Preview Lab → · Contrast checker → · Palette generator →