#173E72#173E72

#173E72 is a dark, moderate cyan. Relative luminance 0.048; OKLCH L 36.6% C 0.100 H 256.8°. Best body text is #FFFFFF at 10.67:1 contrast (WCAG AA passes).

Color values

HEX	#173E72
RGB	rgb(23, 62, 114)
HSL	hsl(214, 66%, 27%)
HSV	hsv(214, 80%, 45%)
CMYK	cmyk(79.8%, 45.6%, 0%, 55.3%)
CIE-LAB	lab(26.28, 6.50, -33.91)
CIE-LCH	lch(26.28, 34.53, 280.85°)
OKLab	oklab(36.63% -0.0228 -0.0971)
OKLCH	oklch(36.63% 0.1 256.8)
XYZ	xyz(5.1121, 4.8417, 16.5814)
Luminance	0.0484 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173E72 #724B17

analogous

#176C72 #173E72 #1E1772

triadic

#173E72 #72173E #3E7217

tetradic

#173E72 #72176C #724B17 #17721E

square

#173E72 #72176C #724B17 #17721E

split-complementary

#173E72 #721E17 #6C7217

monochromatic

#050E19 #0D223F #173E72 #215AA5 #2E76D5

Accessibility & contrast

On white

10.67

#173E72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#173E72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173E72

10.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173E72	#FFFFFF	#000000	##FFFFFF
##173E72	1.00	10.67	1.97	10.67
#FFFFFF	10.67	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#244374

Deuteranopia (green-blind)

#123A71

Tritanopia (blue-blind)

#004A52

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #173e72;
/* rgb */ color: rgb(23, 62, 114);
/* oklch */ color: oklch(36.6% 0.100 256.8);

Tailwind

colors: {
  custom: {
    50: '#63729b',
    500: '#173e72',
    950: '#000000',
  },
}

SCSS

$custom: #173e72;
$custom-light: #63729b;
$custom-dark: #000000;

JSON

{
  "hex": "#173e72",
  "rgb": {
    "r": 23,
    "g": 62,
    "b": 114
  },
  "hsl": {
    "h": 214.286,
    "s": 66.423,
    "l": 26.863
  },
  "oklch": {
    "l": 0.36626,
    "c": 0.09974,
    "h": 256.8
  },
  "luminance": 0.04842
}

Semantic roles & 50–950 ramp

primary

#173E72

secondary

#A87A3D

accent

#A03EE9

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #173E72

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

Preview Lab → · Contrast checker → · Palette generator →