#173561#173561

#173561 is a dark, moderate blue. Relative luminance 0.036; OKLCH L 33.2% C 0.086 H 258.1°. Best body text is #FFFFFF at 12.22:1 contrast (WCAG AA passes).

Color values

HEX	#173561
RGB	rgb(23, 53, 97)
HSL	hsl(216, 62%, 24%)
HSV	hsv(216, 76%, 38%)
CMYK	cmyk(76.3%, 45.4%, 0%, 62%)
CIE-LAB	lab(22.27, 5.76, -29.37)
CIE-LCH	lch(22.27, 29.93, 281.10°)
OKLab	oklab(33.16% -0.0177 -0.0839)
OKLCH	oklch(33.16% 0.086 258.1)
XYZ	xyz(3.7833, 3.5910, 11.8007)
Luminance	0.0359 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173561 #614317

analogous

#175A61 #173561 #1E1761

triadic

#173561 #611735 #356117

tetradic

#173561 #61175A #614317 #17611E

square

#173561 #61175A #614317 #17611E

split-complementary

#173561 #611E17 #5A6117

monochromatic

#060E19 #0B1A30 #173561 #235092 #2E6BC4

Accessibility & contrast

On white

12.22

#173561 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#173561 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173561

12.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173561	#FFFFFF	#000000	##FFFFFF
##173561	1.00	12.22	1.72	12.22
#FFFFFF	12.22	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#203963

Deuteranopia (green-blind)

#133260

Tritanopia (blue-blind)

#003F46

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #173561;
/* rgb */ color: rgb(23, 53, 97);
/* oklch */ color: oklch(33.2% 0.086 258.1);

Tailwind

colors: {
  custom: {
    50: '#5f6b8e',
    500: '#173561',
    950: '#000000',
  },
}

SCSS

$custom: #173561;
$custom-light: #5f6b8e;
$custom-dark: #000000;

JSON

{
  "hex": "#173561",
  "rgb": {
    "r": 23,
    "g": 53,
    "b": 97
  },
  "hsl": {
    "h": 215.676,
    "s": 61.667,
    "l": 23.529
  },
  "oklch": {
    "l": 0.33157,
    "c": 0.08579,
    "h": 258.1
  },
  "luminance": 0.03591
}

Semantic roles & 50–950 ramp

primary

#173561

secondary

#98733C

accent

#A343E5

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05060C

muted

#797A7D

Preview Lab

Preview with #173561

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

Preview Lab → · Contrast checker → · Palette generator →