#173C5D#173C5D

#173C5D is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.7% C 0.072 H 248.4°. Best body text is #FFFFFF at 11.41:1 contrast (WCAG AA passes).

Color values

HEX	#173C5D
RGB	rgb(23, 60, 93)
HSL	hsl(208, 60%, 23%)
HSV	hsv(208, 75%, 36%)
CMYK	cmyk(75.3%, 35.5%, 0%, 63.5%)
CIE-LAB	lab(24.33, -0.75, -23.49)
CIE-LCH	lch(24.33, 23.50, 268.17°)
OKLab	oklab(34.69% -0.0264 -0.0666)
OKLCH	oklch(34.69% 0.072 248.4)
XYZ	xyz(3.9442, 4.2038, 10.9573)
Luminance	0.0420 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173C5D #5D3817

analogous

#175D5B #173C5D #17195D

triadic

#173C5D #5D173C #3C5D17

tetradic

#173C5D #5B175D #5D3817 #195D17

square

#173C5D #5B175D #5D3817 #195D17

split-complementary

#173C5D #5D1719 #5D5B17

monochromatic

#061019 #0B1C2C #173C5D #235C8E #2F7BBF

Accessibility & contrast

On white

11.41

#173C5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#173C5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173C5D

11.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173C5D	#FFFFFF	#000000	##FFFFFF
##173C5D	1.00	11.41	1.84	11.41
#FFFFFF	11.41	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D3D5E

Deuteranopia (green-blind)

#23375C

Tritanopia (blue-blind)

#004448

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173c5d;
/* rgb */ color: rgb(23, 60, 93);
/* oklch */ color: oklch(34.7% 0.072 248.4);

Tailwind

colors: {
  custom: {
    50: '#5e718b',
    500: '#173c5d',
    950: '#000000',
  },
}

SCSS

$custom: #173c5d;
$custom-light: #5e718b;
$custom-dark: #000000;

JSON

{
  "hex": "#173c5d",
  "rgb": {
    "r": 23,
    "g": 60,
    "b": 93
  },
  "hsl": {
    "h": 208.286,
    "s": 60.345,
    "l": 22.745
  },
  "oklch": {
    "l": 0.34687,
    "c": 0.07164,
    "h": 248.4
  },
  "luminance": 0.04204
}

Semantic roles & 50–950 ramp

primary

#173C5D

secondary

#94653C

accent

#8F44E3

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #173C5D

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

Preview Lab → · Contrast checker → · Palette generator →