#173F65#173F65

#173F65 is a dark, moderate cyan. Relative luminance 0.047; OKLCH L 36.0% C 0.080 H 250.1°. Best body text is #FFFFFF at 10.85:1 contrast (WCAG AA passes).

Color values

HEX	#173F65
RGB	rgb(23, 63, 101)
HSL	hsl(209, 63%, 24%)
HSV	hsv(209, 77%, 40%)
CMYK	cmyk(77.2%, 37.6%, 0%, 60.4%)
CIE-LAB	lab(25.79, 0.46, -26.37)
CIE-LCH	lch(25.79, 26.37, 271.00°)
OKLab	oklab(35.98% -0.0272 -0.0749)
OKLCH	oklch(35.98% 0.08 250.1)
XYZ	xyz(4.4789, 4.6763, 12.9760)
Luminance	0.0468 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173F65 #653D17

analogous

#176564 #173F65 #171865

triadic

#173F65 #65173F #3F6517

tetradic

#173F65 #641765 #653D17 #186517

square

#173F65 #641765 #653D17 #186517

split-complementary

#173F65 #651718 #656417

monochromatic

#061019 #0C2033 #173F65 #225E97 #2E7DC9

Accessibility & contrast

On white

10.85

#173F65 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#173F65 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173F65

10.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173F65	#FFFFFF	#000000	##FFFFFF
##173F65	1.00	10.85	1.94	10.85
#FFFFFF	10.85	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E4167

Deuteranopia (green-blind)

#223A64

Tritanopia (blue-blind)

#00484D

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #173f65;
/* rgb */ color: rgb(23, 63, 101);
/* oklch */ color: oklch(36.0% 0.080 250.1);

Tailwind

colors: {
  custom: {
    50: '#607391',
    500: '#173f65',
    950: '#000000',
  },
}

SCSS

$custom: #173f65;
$custom-light: #607391;
$custom-dark: #000000;

JSON

{
  "hex": "#173f65",
  "rgb": {
    "r": 23,
    "g": 63,
    "b": 101
  },
  "hsl": {
    "h": 209.231,
    "s": 62.903,
    "l": 24.314
  },
  "oklch": {
    "l": 0.35983,
    "c": 0.07973,
    "h": 250.1
  },
  "luminance": 0.04677
}

Semantic roles & 50–950 ramp

primary

#173F65

secondary

#9B6B3C

accent

#9242E6

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05080C

muted

#797B7D

Preview Lab

Preview with #173F65

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

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