#173E73#173E73

#173E73 is a dark, moderate cyan. Relative luminance 0.049; OKLCH L 36.7% C 0.101 H 257.1°. Best body text is #FFFFFF at 10.64:1 contrast (WCAG AA passes).

Color values

HEX	#173E73
RGB	rgb(23, 62, 115)
HSL	hsl(215, 67%, 27%)
HSV	hsv(215, 80%, 45%)
CMYK	cmyk(80%, 46.1%, 0%, 54.9%)
CIE-LAB	lab(26.35, 6.91, -34.44)
CIE-LCH	lch(26.35, 35.12, 281.35°)
OKLab	oklab(36.7% -0.0226 -0.0986)
OKLCH	oklch(36.7% 0.101 257.1)
XYZ	xyz(5.1693, 4.8646, 16.8829)
Luminance	0.0486 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173E73 #734C17

analogous

#176C73 #173E73 #1E1773

triadic

#173E73 #73173E #3E7317

tetradic

#173E73 #73176C #734C17 #17731E

square

#173E73 #73176C #734C17 #17731E

split-complementary

#173E73 #731E17 #6C7317

monochromatic

#050E1A #0D2340 #173E73 #2159A6 #2F76D5

Accessibility & contrast

On white

10.64

#173E73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#173E73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173E73

10.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173E73	#FFFFFF	#000000	##FFFFFF
##173E73	1.00	10.64	1.97	10.64
#FFFFFF	10.64	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234375

Deuteranopia (green-blind)

#113A72

Tritanopia (blue-blind)

#004B53

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #173e73;
/* rgb */ color: rgb(23, 62, 115);
/* oklch */ color: oklch(36.7% 0.101 257.1);

Tailwind

colors: {
  custom: {
    50: '#63729c',
    500: '#173e73',
    950: '#000000',
  },
}

SCSS

$custom: #173e73;
$custom-light: #63729c;
$custom-dark: #000000;

JSON

{
  "hex": "#173e73",
  "rgb": {
    "r": 23,
    "g": 62,
    "b": 115
  },
  "hsl": {
    "h": 214.565,
    "s": 66.667,
    "l": 27.059
  },
  "oklch": {
    "l": 0.36699,
    "c": 0.1012,
    "h": 257.1
  },
  "luminance": 0.04865
}

Semantic roles & 50–950 ramp

primary

#173E73

secondary

#A97B3D

accent

#A13EEA

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #173E73

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

Preview Lab → · Contrast checker → · Palette generator →