#173F75#173F75

#173F75 is a dark, moderate cyan. Relative luminance 0.050; OKLCH L 37.1% C 0.103 H 257.0°. Best body text is #FFFFFF at 10.48:1 contrast (WCAG AA passes).

Color values

HEX	#173F75
RGB	rgb(23, 63, 117)
HSL	hsl(214, 67%, 27%)
HSV	hsv(214, 80%, 46%)
CMYK	cmyk(80.3%, 46.2%, 0%, 54.1%)
CIE-LAB	lab(26.79, 7.05, -34.99)
CIE-LCH	lch(26.79, 35.69, 281.39°)
OKLab	oklab(37.09% -0.0231 -0.1002)
OKLCH	oklch(37.09% 0.103 257)
XYZ	xyz(5.3406, 5.0209, 17.5138)
Luminance	0.0502 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173F75 #754D17

analogous

#176E75 #173F75 #1E1775

triadic

#173F75 #75173F #3F7517

tetradic

#173F75 #75176E #754D17 #17751E

square

#173F75 #75176E #754D17 #17751E

split-complementary

#173F75 #751E17 #6E7517

monochromatic

#050E1A #0D2342 #173F75 #215BA8 #3077D6

Accessibility & contrast

On white

10.48

#173F75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#173F75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173F75

10.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173F75	#FFFFFF	#000000	##FFFFFF
##173F75	1.00	10.48	2.00	10.48
#FFFFFF	10.48	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234477

Deuteranopia (green-blind)

#103B74

Tritanopia (blue-blind)

#004C54

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #173f75;
/* rgb */ color: rgb(23, 63, 117);
/* oklch */ color: oklch(37.1% 0.103 257.0);

Tailwind

colors: {
  custom: {
    50: '#64739d',
    500: '#173f75',
    950: '#000000',
  },
}

SCSS

$custom: #173f75;
$custom-light: #64739d;
$custom-dark: #000000;

JSON

{
  "hex": "#173f75",
  "rgb": {
    "r": 23,
    "g": 63,
    "b": 117
  },
  "hsl": {
    "h": 214.468,
    "s": 67.143,
    "l": 27.451
  },
  "oklch": {
    "l": 0.37089,
    "c": 0.10286,
    "h": 257
  },
  "luminance": 0.05022
}

Semantic roles & 50–950 ramp

primary

#173F75

secondary

#AA7C3D

accent

#A13EEA

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #173F75

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

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