#173A6A#173A6A

#173A6A is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 35.1% C 0.093 H 257.1°. Best body text is #FFFFFF at 11.35:1 contrast (WCAG AA passes).

Color values

HEX	#173A6A
RGB	rgb(23, 58, 106)
HSL	hsl(215, 64%, 25%)
HSV	hsv(215, 78%, 42%)
CMYK	cmyk(78.3%, 45.3%, 0%, 58.4%)
CIE-LAB	lab(24.48, 5.97, -31.68)
CIE-LCH	lch(24.48, 32.24, 280.68°)
OKLab	oklab(35.06% -0.0207 -0.0906)
OKLCH	oklch(35.06% 0.093 257.1)
XYZ	xyz(4.4670, 4.2484, 14.2175)
Luminance	0.0425 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173A6A #6A4717

analogous

#17636A #173A6A #1E176A

triadic

#173A6A #6A173A #3A6A17

tetradic

#173A6A #6A1763 #6A4717 #176A1E

square

#173A6A #6A1763 #6A4717 #176A1E

split-complementary

#173A6A #6A1E17 #636A17

monochromatic

#050E19 #0C1E38 #173A6A #22569C #2D71CF

Accessibility & contrast

On white

11.35

#173A6A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#173A6A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173A6A

11.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173A6A	#FFFFFF	#000000	##FFFFFF
##173A6A	1.00	11.35	1.85	11.35
#FFFFFF	11.35	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#223E6C

Deuteranopia (green-blind)

#133769

Tritanopia (blue-blind)

#00454C

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173a6a;
/* rgb */ color: rgb(23, 58, 106);
/* oklch */ color: oklch(35.1% 0.093 257.1);

Tailwind

colors: {
  custom: {
    50: '#616f95',
    500: '#173a6a',
    950: '#000000',
  },
}

SCSS

$custom: #173a6a;
$custom-light: #616f95;
$custom-dark: #000000;

JSON

{
  "hex": "#173a6a",
  "rgb": {
    "r": 23,
    "g": 58,
    "b": 106
  },
  "hsl": {
    "h": 214.699,
    "s": 64.341,
    "l": 25.294
  },
  "oklch": {
    "l": 0.35058,
    "c": 0.09296,
    "h": 257.1
  },
  "luminance": 0.04249
}

Semantic roles & 50–950 ramp

primary

#173A6A

secondary

#A0763D

accent

#A140E7

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#05070D

muted

#7A7A7E

Preview Lab

Preview with #173A6A

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

Preview Lab → · Contrast checker → · Palette generator →