#173644#173644

#173644 is a dark, muted cyan. Relative luminance 0.032; OKLCH L 31.6% C 0.044 H 229.8°. Best body text is #FFFFFF at 12.75:1 contrast (WCAG AA passes).

Color values

HEX	#173644
RGB	rgb(23, 54, 68)
HSL	hsl(199, 49%, 18%)
HSV	hsv(199, 66%, 27%)
CMYK	cmyk(66.2%, 20.6%, 0%, 73.3%)
CIE-LAB	lab(20.97, -6.51, -12.15)
CIE-LCH	lch(20.97, 13.78, 241.83°)
OKLab	oklab(31.6% -0.0286 -0.0339)
OKLCH	oklch(31.6% 0.044 229.8)
XYZ	xyz(2.7155, 3.2376, 5.9495)
Luminance	0.0324 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173644 #442517

analogous

#17443B #173644 #171F44

triadic

#173644 #441736 #364417

tetradic

#173644 #3B1744 #442517 #1F4417

square

#173644 #3B1744 #442517 #1F4417

split-complementary

#173644 #44171F #443B17

monochromatic

#081217 #081217 #173644 #265A72 #367F9F

Accessibility & contrast

On white

12.75

#173644 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#173644 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173644

12.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173644	#FFFFFF	#000000	##FFFFFF
##173644	1.00	12.75	1.65	12.75
#FFFFFF	12.75	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F3545

Deuteranopia (green-blind)

#293044

Tritanopia (blue-blind)

#003A3B

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #173644;
/* rgb */ color: rgb(23, 54, 68);
/* oklch */ color: oklch(31.6% 0.044 229.8);

Tailwind

colors: {
  custom: {
    50: '#596d78',
    500: '#173644',
    950: '#000000',
  },
}

SCSS

$custom: #173644;
$custom-light: #596d78;
$custom-dark: #000000;

JSON

{
  "hex": "#173644",
  "rgb": {
    "r": 23,
    "g": 54,
    "b": 68
  },
  "hsl": {
    "h": 198.667,
    "s": 49.451,
    "l": 17.843
  },
  "oklch": {
    "l": 0.316,
    "c": 0.04435,
    "h": 229.8
  },
  "luminance": 0.03238
}

Semantic roles & 50–950 ramp

primary

#173644

secondary

#7B4F3C

accent

#7A4FD9

background

#F5F6F7

surface

#E9EBED

border

#C5C6C8

text

#040708

muted

#797A7B

Preview Lab

Preview with #173644

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

Preview Lab → · Contrast checker → · Palette generator →