#173C60#173C60

#173C60 is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 34.9% C 0.076 H 250.4°. Best body text is #FFFFFF at 11.34:1 contrast (WCAG AA passes).

Color values

HEX	#173C60
RGB	rgb(23, 60, 96)
HSL	hsl(210, 61%, 23%)
HSV	hsv(210, 76%, 38%)
CMYK	cmyk(76%, 37.5%, 0%, 62.4%)
CIE-LAB	lab(24.51, 0.47, -25.17)
CIE-LCH	lch(24.51, 25.17, 271.06°)
OKLab	oklab(34.88% -0.0255 -0.0715)
OKLCH	oklch(34.88% 0.076 250.4)
XYZ	xyz(4.0797, 4.2580, 11.6709)
Luminance	0.0426 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173C60 #603B17

analogous

#17605F #173C60 #171760

triadic

#173C60 #60173C #3C6017

tetradic

#173C60 #5F1760 #603B17 #176017

square

#173C60 #5F1760 #603B17 #176017

split-complementary

#173C60 #601717 #605F17

monochromatic

#060F19 #0B1D2F #173C60 #235B91 #2F7AC3

Accessibility & contrast

On white

11.34

#173C60 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#173C60 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173C60

11.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173C60	#FFFFFF	#000000	##FFFFFF
##173C60	1.00	11.34	1.85	11.34
#FFFFFF	11.34	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C3E62

Deuteranopia (green-blind)

#21375F

Tritanopia (blue-blind)

#004449

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173c60;
/* rgb */ color: rgb(23, 60, 96);
/* oklch */ color: oklch(34.9% 0.076 250.4);

Tailwind

colors: {
  custom: {
    50: '#5f718d',
    500: '#173c60',
    950: '#000000',
  },
}

SCSS

$custom: #173c60;
$custom-light: #5f718d;
$custom-dark: #000000;

JSON

{
  "hex": "#173c60",
  "rgb": {
    "r": 23,
    "g": 60,
    "b": 96
  },
  "hsl": {
    "h": 209.589,
    "s": 61.345,
    "l": 23.333
  },
  "oklch": {
    "l": 0.34879,
    "c": 0.07589,
    "h": 250.4
  },
  "luminance": 0.04258
}

Semantic roles & 50–950 ramp

primary

#173C60

secondary

#97693C

accent

#9343E4

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #173C60

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

Preview Lab → · Contrast checker → · Palette generator →