#173D5E#173D5E

#173D5E is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 35.0% C 0.072 H 247.8°. Best body text is #FFFFFF at 11.26:1 contrast (WCAG AA passes).

Color values

HEX	#173D5E
RGB	rgb(23, 61, 94)
HSL	hsl(208, 61%, 23%)
HSV	hsv(208, 76%, 37%)
CMYK	cmyk(75.5%, 35.1%, 0%, 63.1%)
CIE-LAB	lab(24.73, -1.02, -23.52)
CIE-LCH	lch(24.73, 23.54, 267.51°)
OKLab	oklab(35.01% -0.0272 -0.0667)
OKLCH	oklch(35.01% 0.072 247.8)
XYZ	xyz(4.0417, 4.3274, 11.2098)
Luminance	0.0433 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173D5E #5E3817

analogous

#175E5B #173D5E #171A5E

triadic

#173D5E #5E173D #3D5E17

tetradic

#173D5E #5B175E #5E3817 #1A5E17

square

#173D5E #5B175E #5E3817 #1A5E17

split-complementary

#173D5E #5E171A #5E5B17

monochromatic

#061019 #0B1D2D #173D5E #235D8F #2F7DC0

Accessibility & contrast

On white

11.26

#173D5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#173D5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173D5E

11.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173D5E	#FFFFFF	#000000	##FFFFFF
##173D5E	1.00	11.26	1.87	11.26
#FFFFFF	11.26	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3E5F

Deuteranopia (green-blind)

#24385D

Tritanopia (blue-blind)

#004549

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #173d5e;
/* rgb */ color: rgb(23, 61, 94);
/* oklch */ color: oklch(35.0% 0.072 247.8);

Tailwind

colors: {
  custom: {
    50: '#5e728c',
    500: '#173d5e',
    950: '#000000',
  },
}

SCSS

$custom: #173d5e;
$custom-light: #5e728c;
$custom-dark: #000000;

JSON

{
  "hex": "#173d5e",
  "rgb": {
    "r": 23,
    "g": 61,
    "b": 94
  },
  "hsl": {
    "h": 207.887,
    "s": 60.684,
    "l": 22.941
  },
  "oklch": {
    "l": 0.35014,
    "c": 0.07201,
    "h": 247.8
  },
  "luminance": 0.04328
}

Semantic roles & 50–950 ramp

primary

#173D5E

secondary

#95653C

accent

#8E44E4

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #173D5E

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

Preview Lab → · Contrast checker → · Palette generator →