#173C6A#173C6A

#173C6A is a dark, moderate cyan. Relative luminance 0.045; OKLCH L 35.6% C 0.090 H 255.5°. Best body text is #FFFFFF at 11.11:1 contrast (WCAG AA passes).

Color values

HEX	#173C6A
RGB	rgb(23, 60, 106)
HSL	hsl(213, 64%, 25%)
HSV	hsv(213, 78%, 42%)
CMYK	cmyk(78.3%, 43.4%, 0%, 58.4%)
CIE-LAB	lab(25.12, 4.58, -30.65)
CIE-LCH	lch(25.12, 30.99, 278.49°)
OKLab	oklab(35.56% -0.0227 -0.0876)
OKLCH	oklch(35.56% 0.09 255.5)
XYZ	xyz(4.5698, 4.4540, 14.2517)
Luminance	0.0445 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173C6A #6A4517

analogous

#17656A #173C6A #1B176A

triadic

#173C6A #6A173C #3C6A17

tetradic

#173C6A #6A1765 #6A4517 #176A1B

square

#173C6A #6A1765 #6A4517 #176A1B

split-complementary

#173C6A #6A1B17 #656A17

monochromatic

#050E19 #0C2038 #173C6A #22589C #2D75CF

Accessibility & contrast

On white

11.11

#173C6A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#173C6A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173C6A

11.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173C6A	#FFFFFF	#000000	##FFFFFF
##173C6A	1.00	11.11	1.89	11.11
#FFFFFF	11.11	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#26406C

Deuteranopia (green-blind)

#183869

Tritanopia (blue-blind)

#00474D

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #173c6a;
/* rgb */ color: rgb(23, 60, 106);
/* oklch */ color: oklch(35.6% 0.090 255.5);

Tailwind

colors: {
  custom: {
    50: '#617195',
    500: '#173c6a',
    950: '#000000',
  },
}

SCSS

$custom: #173c6a;
$custom-light: #617195;
$custom-dark: #000000;

JSON

{
  "hex": "#173c6a",
  "rgb": {
    "r": 23,
    "g": 60,
    "b": 106
  },
  "hsl": {
    "h": 213.253,
    "s": 64.341,
    "l": 25.294
  },
  "oklch": {
    "l": 0.35557,
    "c": 0.09047,
    "h": 255.5
  },
  "luminance": 0.04454
}

Semantic roles & 50–950 ramp

primary

#173C6A

secondary

#A0743D

accent

#9D40E7

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#05070D

muted

#7A7A7E

Preview Lab

Preview with #173C6A

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

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