#173C69#173C69

#173C69 is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 35.5% C 0.089 H 255.0°. Best body text is #FFFFFF at 11.13:1 contrast (WCAG AA passes).

Color values

HEX	#173C69
RGB	rgb(23, 60, 105)
HSL	hsl(213, 64%, 25%)
HSV	hsv(213, 78%, 41%)
CMYK	cmyk(78.1%, 42.9%, 0%, 58.8%)
CIE-LAB	lab(25.06, 4.16, -30.11)
CIE-LCH	lch(25.06, 30.40, 277.87°)
OKLab	oklab(35.49% -0.023 -0.086)
OKLCH	oklch(35.49% 0.089 255)
XYZ	xyz(4.5181, 4.4333, 13.9795)
Luminance	0.0443 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173C69 #694417

analogous

#176569 #173C69 #1B1769

triadic

#173C69 #69173C #3C6917

tetradic

#173C69 #691765 #694417 #17691B

square

#173C69 #691765 #694417 #17691B

split-complementary

#173C69 #691B17 #656917

monochromatic

#050E19 #0C1F37 #173C69 #22599B #2D75CD

Accessibility & contrast

On white

11.13

#173C69 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#173C69 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173C69

11.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173C69	#FFFFFF	#000000	##FFFFFF
##173C69	1.00	11.13	1.89	11.13
#FFFFFF	11.13	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#27406B

Deuteranopia (green-blind)

#193868

Tritanopia (blue-blind)

#00474D

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #173c69;
/* rgb */ color: rgb(23, 60, 105);
/* oklch */ color: oklch(35.5% 0.089 255.0);

Tailwind

colors: {
  custom: {
    50: '#617194',
    500: '#173c69',
    950: '#000000',
  },
}

SCSS

$custom: #173c69;
$custom-light: #617194;
$custom-dark: #000000;

JSON

{
  "hex": "#173c69",
  "rgb": {
    "r": 23,
    "g": 60,
    "b": 105
  },
  "hsl": {
    "h": 212.927,
    "s": 64.063,
    "l": 25.098
  },
  "oklch": {
    "l": 0.35487,
    "c": 0.08899,
    "h": 255
  },
  "luminance": 0.04434
}

Semantic roles & 50–950 ramp

primary

#173C69

secondary

#9F733D

accent

#9C41E7

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#05070D

muted

#7A7A7E

Preview Lab

Preview with #173C69

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

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