#173563#173563

#173563 is a dark, moderate blue. Relative luminance 0.036; OKLCH L 33.3% C 0.089 H 258.8°. Best body text is #FFFFFF at 12.17:1 contrast (WCAG AA passes).

Color values

HEX	#173563
RGB	rgb(23, 53, 99)
HSL	hsl(216, 62%, 24%)
HSV	hsv(216, 77%, 39%)
CMYK	cmyk(76.8%, 46.5%, 0%, 61.2%)
CIE-LAB	lab(22.40, 6.59, -30.46)
CIE-LCH	lch(22.40, 31.17, 282.21°)
OKLab	oklab(33.3% -0.0173 -0.0871)
OKLCH	oklch(33.3% 0.089 258.8)
XYZ	xyz(3.8778, 3.6288, 12.2980)
Luminance	0.0363 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173563 #634517

analogous

#175B63 #173563 #1F1763

triadic

#173563 #631735 #356317

tetradic

#173563 #63175B #634517 #17631F

square

#173563 #63175B #634517 #17631F

split-complementary

#173563 #631F17 #5B6317

monochromatic

#060D19 #0B1A31 #173563 #235095 #2E6AC6

Accessibility & contrast

On white

12.17

#173563 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#173563 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173563

12.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173563	#FFFFFF	#000000	##FFFFFF
##173563	1.00	12.17	1.73	12.17
#FFFFFF	12.17	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E3965

Deuteranopia (green-blind)

#103262

Tritanopia (blue-blind)

#004047

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #173563;
/* rgb */ color: rgb(23, 53, 99);
/* oklch */ color: oklch(33.3% 0.089 258.8);

Tailwind

colors: {
  custom: {
    50: '#5f6b90',
    500: '#173563',
    950: '#000000',
  },
}

SCSS

$custom: #173563;
$custom-light: #5f6b90;
$custom-dark: #000000;

JSON

{
  "hex": "#173563",
  "rgb": {
    "r": 23,
    "g": 53,
    "b": 99
  },
  "hsl": {
    "h": 216.316,
    "s": 62.295,
    "l": 23.922
  },
  "oklch": {
    "l": 0.33303,
    "c": 0.08884,
    "h": 258.8
  },
  "luminance": 0.03629
}

Semantic roles & 50–950 ramp

primary

#173563

secondary

#9A753C

accent

#A542E5

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05060C

muted

#797A7D

Preview Lab

Preview with #173563

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

Preview Lab → · Contrast checker → · Palette generator →