#173D5D#173D5D

#173D5D is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 35.0% C 0.071 H 247.1°. Best body text is #FFFFFF at 11.28:1 contrast (WCAG AA passes).

Color values

HEX	#173D5D
RGB	rgb(23, 61, 93)
HSL	hsl(207, 60%, 23%)
HSV	hsv(207, 75%, 36%)
CMYK	cmyk(75.3%, 34.4%, 0%, 63.5%)
CIE-LAB	lab(24.67, -1.42, -22.96)
CIE-LCH	lch(24.67, 23.00, 266.45°)
OKLab	oklab(34.95% -0.0275 -0.065)
OKLCH	oklch(34.95% 0.071 247.1)
XYZ	xyz(3.9971, 4.3095, 10.9750)
Luminance	0.0431 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173D5D #5D3717

analogous

#175D5A #173D5D #171A5D

triadic

#173D5D #5D173D #3D5D17

tetradic

#173D5D #5A175D #5D3717 #1A5D17

square

#173D5D #5A175D #5D3717 #1A5D17

split-complementary

#173D5D #5D171A #5D5A17

monochromatic

#061019 #0B1D2C #173D5D #235D8E #2F7DBF

Accessibility & contrast

On white

11.28

#173D5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#173D5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173D5D

11.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173D5D	#FFFFFF	#000000	##FFFFFF
##173D5D	1.00	11.28	1.86	11.28
#FFFFFF	11.28	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F3E5E

Deuteranopia (green-blind)

#25385C

Tritanopia (blue-blind)

#004548

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #173d5d;
/* rgb */ color: rgb(23, 61, 93);
/* oklch */ color: oklch(35.0% 0.071 247.1);

Tailwind

colors: {
  custom: {
    50: '#5e728b',
    500: '#173d5d',
    950: '#000000',
  },
}

SCSS

$custom: #173d5d;
$custom-light: #5e728b;
$custom-dark: #000000;

JSON

{
  "hex": "#173d5d",
  "rgb": {
    "r": 23,
    "g": 61,
    "b": 93
  },
  "hsl": {
    "h": 207.429,
    "s": 60.345,
    "l": 22.745
  },
  "oklch": {
    "l": 0.34951,
    "c": 0.07062,
    "h": 247.1
  },
  "luminance": 0.0431
}

Semantic roles & 50–950 ramp

primary

#173D5D

secondary

#94643C

accent

#8D44E3

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #173D5D

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

Preview Lab → · Contrast checker → · Palette generator →