#173C65#173C65

#173C65 is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 35.2% C 0.083 H 253.2°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#173C65
RGB	rgb(23, 60, 101)
HSL	hsl(212, 63%, 24%)
HSV	hsv(212, 77%, 40%)
CMYK	cmyk(77.2%, 40.6%, 0%, 60.4%)
CIE-LAB	lab(24.81, 2.51, -27.93)
CIE-LCH	lch(24.81, 28.04, 275.14°)
OKLab	oklab(35.21% -0.024 -0.0796)
OKLCH	oklch(35.21% 0.083 253.2)
XYZ	xyz(4.3173, 4.3530, 12.9221)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173C65 #654017

analogous

#176365 #173C65 #191765

triadic

#173C65 #65173C #3C6517

tetradic

#173C65 #651763 #654017 #176519

square

#173C65 #651763 #654017 #176519

split-complementary

#173C65 #651917 #636517

monochromatic

#060F19 #0C1E33 #173C65 #225A97 #2E77C9

Accessibility & contrast

On white

11.23

#173C65 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#173C65 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173C65

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173C65	#FFFFFF	#000000	##FFFFFF
##173C65	1.00	11.23	1.87	11.23
#FFFFFF	11.23	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#293F67

Deuteranopia (green-blind)

#1D3864

Tritanopia (blue-blind)

#00464B

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #173c65;
/* rgb */ color: rgb(23, 60, 101);
/* oklch */ color: oklch(35.2% 0.083 253.2);

Tailwind

colors: {
  custom: {
    50: '#607191',
    500: '#173c65',
    950: '#000000',
  },
}

SCSS

$custom: #173c65;
$custom-light: #607191;
$custom-dark: #000000;

JSON

{
  "hex": "#173c65",
  "rgb": {
    "r": 23,
    "g": 60,
    "b": 101
  },
  "hsl": {
    "h": 211.538,
    "s": 62.903,
    "l": 24.314
  },
  "oklch": {
    "l": 0.35211,
    "c": 0.08312,
    "h": 253.2
  },
  "luminance": 0.04353
}

Semantic roles & 50–950 ramp

primary

#173C65

secondary

#9B6E3C

accent

#9842E6

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05070D

muted

#797A7D

Preview Lab

Preview with #173C65

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

Preview Lab → · Contrast checker → · Palette generator →