#173B69#173B69

#173B69 is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 35.2% C 0.090 H 255.9°. Best body text is #FFFFFF at 11.25:1 contrast (WCAG AA passes).

Color values

HEX	#173B69
RGB	rgb(23, 59, 105)
HSL	hsl(214, 64%, 25%)
HSV	hsv(214, 78%, 41%)
CMYK	cmyk(78.1%, 43.8%, 0%, 58.8%)
CIE-LAB	lab(24.73, 4.86, -30.63)
CIE-LCH	lch(24.73, 31.01, 279.01°)
OKLab	oklab(35.24% -0.0219 -0.0875)
OKLCH	oklch(35.24% 0.09 255.9)
XYZ	xyz(4.4662, 4.3295, 13.9622)
Luminance	0.0433 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173B69 #694517

analogous

#176469 #173B69 #1C1769

triadic

#173B69 #69173B #3B6917

tetradic

#173B69 #691764 #694517 #17691C

square

#173B69 #691764 #694517 #17691C

split-complementary

#173B69 #691C17 #646917

monochromatic

#050E19 #0C1F37 #173B69 #22579B #2D73CD

Accessibility & contrast

On white

11.25

#173B69 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#173B69 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173B69

11.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173B69	#FFFFFF	#000000	##FFFFFF
##173B69	1.00	11.25	1.87	11.25
#FFFFFF	11.25	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#253F6B

Deuteranopia (green-blind)

#173768

Tritanopia (blue-blind)

#00464C

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #173b69;
/* rgb */ color: rgb(23, 59, 105);
/* oklch */ color: oklch(35.2% 0.090 255.9);

Tailwind

colors: {
  custom: {
    50: '#617094',
    500: '#173b69',
    950: '#000000',
  },
}

SCSS

$custom: #173b69;
$custom-light: #617094;
$custom-dark: #000000;

JSON

{
  "hex": "#173b69",
  "rgb": {
    "r": 23,
    "g": 59,
    "b": 105
  },
  "hsl": {
    "h": 213.659,
    "s": 64.063,
    "l": 25.098
  },
  "oklch": {
    "l": 0.35236,
    "c": 0.09022,
    "h": 255.9
  },
  "luminance": 0.0433
}

Semantic roles & 50–950 ramp

primary

#173B69

secondary

#9F743D

accent

#9E41E7

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#05070D

muted

#7A7A7E

Preview Lab

Preview with #173B69

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

Preview Lab → · Contrast checker → · Palette generator →