#173A69#173A69

#173A69 is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 35.0% C 0.091 H 256.8°. Best body text is #FFFFFF at 11.38:1 contrast (WCAG AA passes).

Color values

HEX	#173A69
RGB	rgb(23, 58, 105)
HSL	hsl(214, 64%, 25%)
HSV	hsv(214, 78%, 41%)
CMYK	cmyk(78.1%, 44.8%, 0%, 58.8%)
CIE-LAB	lab(24.41, 5.56, -31.14)
CIE-LCH	lch(24.41, 31.63, 280.12°)
OKLab	oklab(34.99% -0.0209 -0.089)
OKLCH	oklch(34.99% 0.091 256.8)
XYZ	xyz(4.4153, 4.2277, 13.9452)
Luminance	0.0423 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173A69 #694617

analogous

#176369 #173A69 #1D1769

triadic

#173A69 #69173A #3A6917

tetradic

#173A69 #691763 #694617 #17691D

square

#173A69 #691763 #694617 #17691D

split-complementary

#173A69 #691D17 #636917

monochromatic

#050E19 #0C1E37 #173A69 #22569B #2D71CD

Accessibility & contrast

On white

11.38

#173A69 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#173A69 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173A69

11.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173A69	#FFFFFF	#000000	##FFFFFF
##173A69	1.00	11.38	1.85	11.38
#FFFFFF	11.38	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#233E6B

Deuteranopia (green-blind)

#153768

Tritanopia (blue-blind)

#00454C

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173a69;
/* rgb */ color: rgb(23, 58, 105);
/* oklch */ color: oklch(35.0% 0.091 256.8);

Tailwind

colors: {
  custom: {
    50: '#616f94',
    500: '#173a69',
    950: '#000000',
  },
}

SCSS

$custom: #173a69;
$custom-light: #616f94;
$custom-dark: #000000;

JSON

{
  "hex": "#173a69",
  "rgb": {
    "r": 23,
    "g": 58,
    "b": 105
  },
  "hsl": {
    "h": 214.39,
    "s": 64.063,
    "l": 25.098
  },
  "oklch": {
    "l": 0.34986,
    "c": 0.09147,
    "h": 256.8
  },
  "luminance": 0.04228
}

Semantic roles & 50–950 ramp

primary

#173A69

secondary

#9F753D

accent

#A041E7

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#05070D

muted

#7A7A7E

Preview Lab

Preview with #173A69

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

Preview Lab → · Contrast checker → · Palette generator →