#173C6B#173C6B

#173C6B is a dark, moderate cyan. Relative luminance 0.045; OKLCH L 35.6% C 0.092 H 255.9°. Best body text is #FFFFFF at 11.08:1 contrast (WCAG AA passes).

Color values

HEX	#173C6B
RGB	rgb(23, 60, 107)
HSL	hsl(214, 65%, 25%)
HSV	hsv(214, 79%, 42%)
CMYK	cmyk(78.5%, 43.9%, 0%, 58%)
CIE-LAB	lab(25.18, 4.99, -31.19)
CIE-LCH	lch(25.18, 31.59, 279.09°)
OKLab	oklab(35.63% -0.0225 -0.0891)
OKLCH	oklch(35.63% 0.092 255.9)
XYZ	xyz(4.6221, 4.4749, 14.5272)
Luminance	0.0447 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173C6B #6B4617

analogous

#17666B #173C6B #1C176B

triadic

#173C6B #6B173C #3C6B17

tetradic

#173C6B #6B1766 #6B4617 #176B1C

square

#173C6B #6B1766 #6B4617 #176B1C

split-complementary

#173C6B #6B1C17 #666B17

monochromatic

#050E19 #0C2039 #173C6B #22589D #2D74D0

Accessibility & contrast

On white

11.08

#173C6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#173C6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173C6B

11.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173C6B	#FFFFFF	#000000	##FFFFFF
##173C6B	1.00	11.08	1.90	11.08
#FFFFFF	11.08	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#25406D

Deuteranopia (green-blind)

#17386A

Tritanopia (blue-blind)

#00474E

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #173c6b;
/* rgb */ color: rgb(23, 60, 107);
/* oklch */ color: oklch(35.6% 0.092 255.9);

Tailwind

colors: {
  custom: {
    50: '#617196',
    500: '#173c6b',
    950: '#000000',
  },
}

SCSS

$custom: #173c6b;
$custom-light: #617196;
$custom-dark: #000000;

JSON

{
  "hex": "#173c6b",
  "rgb": {
    "r": 23,
    "g": 60,
    "b": 107
  },
  "hsl": {
    "h": 213.571,
    "s": 64.615,
    "l": 25.49
  },
  "oklch": {
    "l": 0.35628,
    "c": 0.09194,
    "h": 255.9
  },
  "luminance": 0.04475
}

Semantic roles & 50–950 ramp

primary

#173C6B

secondary

#A1753D

accent

#9E40E8

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #173C6B

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

Preview Lab → · Contrast checker → · Palette generator →