#173574#173574

#173574 is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.6% C 0.114 H 262.8°. Best body text is #FFFFFF at 11.68:1 contrast (WCAG AA passes).

Color values

HEX	#173574
RGB	rgb(23, 53, 116)
HSL	hsl(221, 67%, 27%)
HSV	hsv(221, 80%, 45%)
CMYK	cmyk(80.2%, 54.3%, 0%, 54.5%)
CIE-LAB	lab(23.63, 13.69, -39.44)
CIE-LCH	lch(23.63, 41.75, 289.14°)
OKLab	oklab(34.64% -0.0144 -0.1136)
OKLCH	oklch(34.64% 0.114 262.8)
XYZ	xyz(4.7777, 3.9888, 17.0377)
Luminance	0.0399 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173574 #745617

analogous

#176474 #173574 #281774

triadic

#173574 #741735 #357417

tetradic

#173574 #741764 #745617 #177428

square

#173574 #741764 #745617 #177428

split-complementary

#173574 #742817 #647417

monochromatic

#050C1A #0D1E41 #173574 #214CA7 #3065D6

Accessibility & contrast

On white

11.68

#173574 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#173574 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173574

11.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173574	#FFFFFF	#000000	##FFFFFF
##173574	1.00	11.68	1.80	11.68
#FFFFFF	11.68	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A3D76

Deuteranopia (green-blind)

#003473

Tritanopia (blue-blind)

#00444F

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #173574;
/* rgb */ color: rgb(23, 53, 116);
/* oklch */ color: oklch(34.6% 0.114 262.8);

Tailwind

colors: {
  custom: {
    50: '#646b9c',
    500: '#173574',
    950: '#000000',
  },
}

SCSS

$custom: #173574;
$custom-light: #646b9c;
$custom-dark: #000000;

JSON

{
  "hex": "#173574",
  "rgb": {
    "r": 23,
    "g": 53,
    "b": 116
  },
  "hsl": {
    "h": 220.645,
    "s": 66.906,
    "l": 27.255
  },
  "oklch": {
    "l": 0.34641,
    "c": 0.11447,
    "h": 262.8
  },
  "luminance": 0.03989
}

Semantic roles & 50–950 ramp

primary

#173574

secondary

#A9873D

accent

#B23EEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #173574

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

Preview Lab → · Contrast checker → · Palette generator →