#173B68#173B68

#173B68 is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 35.2% C 0.089 H 255.5°. Best body text is #FFFFFF at 11.28:1 contrast (WCAG AA passes).

Color values

HEX	#173B68
RGB	rgb(23, 59, 104)
HSL	hsl(213, 64%, 25%)
HSV	hsv(213, 78%, 41%)
CMYK	cmyk(77.9%, 43.3%, 0%, 59.2%)
CIE-LAB	lab(24.67, 4.44, -30.08)
CIE-LCH	lch(24.67, 30.41, 278.40°)
OKLab	oklab(35.17% -0.0222 -0.0859)
OKLCH	oklch(35.17% 0.089 255.5)
XYZ	xyz(4.4151, 4.3091, 13.6931)
Luminance	0.0431 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173B68 #684417

analogous

#176468 #173B68 #1B1768

triadic

#173B68 #68173B #3B6817

tetradic

#173B68 #681764 #684417 #17681B

square

#173B68 #681764 #684417 #17681B

split-complementary

#173B68 #681B17 #646817

monochromatic

#060E19 #0C1F36 #173B68 #22579A #2D74CC

Accessibility & contrast

On white

11.28

#173B68 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#173B68 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173B68

11.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173B68	#FFFFFF	#000000	##FFFFFF
##173B68	1.00	11.28	1.86	11.28
#FFFFFF	11.28	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#263F6A

Deuteranopia (green-blind)

#183767

Tritanopia (blue-blind)

#00464C

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #173b68;
/* rgb */ color: rgb(23, 59, 104);
/* oklch */ color: oklch(35.2% 0.089 255.5);

Tailwind

colors: {
  custom: {
    50: '#607093',
    500: '#173b68',
    950: '#000000',
  },
}

SCSS

$custom: #173b68;
$custom-light: #607093;
$custom-dark: #000000;

JSON

{
  "hex": "#173b68",
  "rgb": {
    "r": 23,
    "g": 59,
    "b": 104
  },
  "hsl": {
    "h": 213.333,
    "s": 63.78,
    "l": 24.902
  },
  "oklch": {
    "l": 0.35165,
    "c": 0.08874,
    "h": 255.5
  },
  "luminance": 0.0431
}

Semantic roles & 50–950 ramp

primary

#173B68

secondary

#9E733D

accent

#9D41E7

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#05070D

muted

#7A7A7E

Preview Lab

Preview with #173B68

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

Preview Lab → · Contrast checker → · Palette generator →