#173F60#173F60

#173F60 is a dark, moderate cyan. Relative luminance 0.046; OKLCH L 35.7% C 0.073 H 246.7°. Best body text is #FFFFFF at 10.96:1 contrast (WCAG AA passes).

Color values

HEX	#173F60
RGB	rgb(23, 63, 96)
HSL	hsl(207, 61%, 23%)
HSV	hsv(207, 76%, 38%)
CMYK	cmyk(76%, 34.4%, 0%, 62.4%)
CIE-LAB	lab(25.51, -1.56, -23.59)
CIE-LCH	lch(25.51, 23.64, 266.22°)
OKLab	oklab(35.67% -0.0288 -0.0668)
OKLCH	oklch(35.67% 0.073 246.7)
XYZ	xyz(4.2414, 4.5812, 11.7248)
Luminance	0.0458 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173F60 #603817

analogous

#17605C #173F60 #171A60

triadic

#173F60 #60173F #3F6017

tetradic

#173F60 #5C1760 #603817 #1A6017

square

#173F60 #5C1760 #603817 #1A6017

split-complementary

#173F60 #60171A #605C17

monochromatic

#061019 #0B1F2F #173F60 #235F91 #2F80C3

Accessibility & contrast

On white

10.96

#173F60 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#173F60 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173F60

10.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173F60	#FFFFFF	#000000	##FFFFFF
##173F60	1.00	10.96	1.92	10.96
#FFFFFF	10.96	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#304061

Deuteranopia (green-blind)

#26395F

Tritanopia (blue-blind)

#00474B

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #173f60;
/* rgb */ color: rgb(23, 63, 96);
/* oklch */ color: oklch(35.7% 0.073 246.7);

Tailwind

colors: {
  custom: {
    50: '#5f738d',
    500: '#173f60',
    950: '#000000',
  },
}

SCSS

$custom: #173f60;
$custom-light: #5f738d;
$custom-dark: #000000;

JSON

{
  "hex": "#173f60",
  "rgb": {
    "r": 23,
    "g": 63,
    "b": 96
  },
  "hsl": {
    "h": 207.123,
    "s": 61.345,
    "l": 23.333
  },
  "oklch": {
    "l": 0.35666,
    "c": 0.07277,
    "h": 246.7
  },
  "luminance": 0.04582
}

Semantic roles & 50–950 ramp

primary

#173F60

secondary

#97653C

accent

#8C43E4

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05080C

muted

#797B7D

Preview Lab

Preview with #173F60

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

Preview Lab → · Contrast checker → · Palette generator →