#173663#173663

#173663 is a dark, moderate blue. Relative luminance 0.037; OKLCH L 33.6% C 0.088 H 258.0°. Best body text is #FFFFFF at 12.04:1 contrast (WCAG AA passes).

Color values

HEX	#173663
RGB	rgb(23, 54, 99)
HSL	hsl(216, 62%, 24%)
HSV	hsv(216, 77%, 39%)
CMYK	cmyk(76.8%, 45.5%, 0%, 61.2%)
CIE-LAB	lab(22.73, 5.88, -29.95)
CIE-LCH	lch(22.73, 30.52, 281.11°)
OKLab	oklab(33.55% -0.0183 -0.0856)
OKLCH	oklch(33.55% 0.088 258)
XYZ	xyz(3.9238, 3.7209, 12.3134)
Luminance	0.0372 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173663 #634417

analogous

#175C63 #173663 #1E1763

triadic

#173663 #631736 #366317

tetradic

#173663 #63175C #634417 #17631E

square

#173663 #63175C #634417 #17631E

split-complementary

#173663 #631E17 #5C6317

monochromatic

#060E19 #0B1B31 #173663 #235195 #2E6CC6

Accessibility & contrast

On white

12.04

#173663 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#173663 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173663

12.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173663	#FFFFFF	#000000	##FFFFFF
##173663	1.00	12.04	1.74	12.04
#FFFFFF	12.04	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#203A65

Deuteranopia (green-blind)

#133362

Tritanopia (blue-blind)

#004147

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #173663;
/* rgb */ color: rgb(23, 54, 99);
/* oklch */ color: oklch(33.6% 0.088 258.0);

Tailwind

colors: {
  custom: {
    50: '#5f6c90',
    500: '#173663',
    950: '#000000',
  },
}

SCSS

$custom: #173663;
$custom-light: #5f6c90;
$custom-dark: #000000;

JSON

{
  "hex": "#173663",
  "rgb": {
    "r": 23,
    "g": 54,
    "b": 99
  },
  "hsl": {
    "h": 215.526,
    "s": 62.295,
    "l": 23.922
  },
  "oklch": {
    "l": 0.33553,
    "c": 0.08754,
    "h": 258
  },
  "luminance": 0.03721
}

Semantic roles & 50–950 ramp

primary

#173663

secondary

#9A733C

accent

#A342E5

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05060C

muted

#797A7D

Preview Lab

Preview with #173663

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

Preview Lab → · Contrast checker → · Palette generator →