#173B6A#173B6A

#173B6A is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 35.3% C 0.092 H 256.3°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#173B6A
RGB	rgb(23, 59, 106)
HSL	hsl(214, 64%, 25%)
HSV	hsv(214, 78%, 42%)
CMYK	cmyk(78.3%, 44.3%, 0%, 58.4%)
CIE-LAB	lab(24.80, 5.27, -31.17)
CIE-LCH	lch(24.80, 31.61, 279.60°)
OKLab	oklab(35.31% -0.0217 -0.0891)
OKLCH	oklch(35.31% 0.092 256.3)
XYZ	xyz(4.5179, 4.3502, 14.2344)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173B6A #6A4617

analogous

#17646A #173B6A #1D176A

triadic

#173B6A #6A173B #3B6A17

tetradic

#173B6A #6A1764 #6A4617 #176A1D

square

#173B6A #6A1764 #6A4617 #176A1D

split-complementary

#173B6A #6A1D17 #646A17

monochromatic

#050E19 #0C1F38 #173B6A #22579C #2D73CF

Accessibility & contrast

On white

11.23

#173B6A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#173B6A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173B6A

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173B6A	#FFFFFF	#000000	##FFFFFF
##173B6A	1.00	11.23	1.87	11.23
#FFFFFF	11.23	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#243F6C

Deuteranopia (green-blind)

#163769

Tritanopia (blue-blind)

#00464D

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #173b6a;
/* rgb */ color: rgb(23, 59, 106);
/* oklch */ color: oklch(35.3% 0.092 256.3);

Tailwind

colors: {
  custom: {
    50: '#617095',
    500: '#173b6a',
    950: '#000000',
  },
}

SCSS

$custom: #173b6a;
$custom-light: #617095;
$custom-dark: #000000;

JSON

{
  "hex": "#173b6a",
  "rgb": {
    "r": 23,
    "g": 59,
    "b": 106
  },
  "hsl": {
    "h": 213.976,
    "s": 64.341,
    "l": 25.294
  },
  "oklch": {
    "l": 0.35307,
    "c": 0.09171,
    "h": 256.3
  },
  "luminance": 0.04351
}

Semantic roles & 50–950 ramp

primary

#173B6A

secondary

#A0753D

accent

#9F40E7

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#05070D

muted

#7A7A7E

Preview Lab

Preview with #173B6A

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

Preview Lab → · Contrast checker → · Palette generator →