#173D72#173D72

#173D72 is a dark, moderate cyan. Relative luminance 0.047; OKLCH L 36.4% C 0.101 H 257.5°. Best body text is #FFFFFF at 10.79:1 contrast (WCAG AA passes).

Color values

HEX	#173D72
RGB	rgb(23, 61, 114)
HSL	hsl(215, 66%, 27%)
HSV	hsv(215, 80%, 45%)
CMYK	cmyk(79.8%, 46.5%, 0%, 55.3%)
CIE-LAB	lab(25.96, 7.20, -34.41)
CIE-LCH	lch(25.96, 35.16, 281.81°)
OKLab	oklab(36.38% -0.0219 -0.0986)
OKLCH	oklch(36.38% 0.101 257.5)
XYZ	xyz(5.0582, 4.7340, 16.5635)
Luminance	0.0474 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173D72 #724C17

analogous

#176B72 #173D72 #1F1772

triadic

#173D72 #72173D #3D7217

tetradic

#173D72 #72176B #724C17 #17721F

square

#173D72 #72176B #724C17 #17721F

split-complementary

#173D72 #721F17 #6B7217

monochromatic

#050E19 #0D223F #173D72 #2158A5 #2E74D5

Accessibility & contrast

On white

10.79

#173D72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#173D72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173D72

10.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173D72	#FFFFFF	#000000	##FFFFFF
##173D72	1.00	10.79	1.95	10.79
#FFFFFF	10.79	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#224274

Deuteranopia (green-blind)

#0F3A71

Tritanopia (blue-blind)

#004A52

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #173d72;
/* rgb */ color: rgb(23, 61, 114);
/* oklch */ color: oklch(36.4% 0.101 257.5);

Tailwind

colors: {
  custom: {
    50: '#63729b',
    500: '#173d72',
    950: '#000000',
  },
}

SCSS

$custom: #173d72;
$custom-light: #63729b;
$custom-dark: #000000;

JSON

{
  "hex": "#173d72",
  "rgb": {
    "r": 23,
    "g": 61,
    "b": 114
  },
  "hsl": {
    "h": 214.945,
    "s": 66.423,
    "l": 26.863
  },
  "oklch": {
    "l": 0.36381,
    "c": 0.101,
    "h": 257.5
  },
  "luminance": 0.04735
}

Semantic roles & 50–950 ramp

primary

#173D72

secondary

#A87B3D

accent

#A23EE9

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #173D72

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

Preview Lab → · Contrast checker → · Palette generator →