#173570#173570

#173570 is a dark, moderate blue. Relative luminance 0.039; OKLCH L 34.3% C 0.109 H 262.1°. Best body text is #FFFFFF at 11.80:1 contrast (WCAG AA passes).

Color values

HEX	#173570
RGB	rgb(23, 53, 112)
HSL	hsl(220, 66%, 26%)
HSV	hsv(220, 79%, 44%)
CMYK	cmyk(79.5%, 52.7%, 0%, 56.1%)
CIE-LAB	lab(23.33, 12.02, -37.37)
CIE-LCH	lch(23.33, 39.26, 287.83°)
OKLab	oklab(34.31% -0.0149 -0.1075)
OKLCH	oklch(34.31% 0.109 262.1)
XYZ	xyz(4.5500, 3.8977, 15.8386)
Luminance	0.0390 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173570 #705217

analogous

#176270 #173570 #261770

triadic

#173570 #701735 #357017

tetradic

#173570 #701762 #705217 #177026

square

#173570 #701762 #705217 #177026

split-complementary

#173570 #702617 #627017

monochromatic

#050C19 #0D1D3D #173570 #214DA3 #2D66D4

Accessibility & contrast

On white

11.80

#173570 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#173570 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173570

11.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173570	#FFFFFF	#000000	##FFFFFF
##173570	1.00	11.80	1.78	11.80
#FFFFFF	11.80	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#113C72

Deuteranopia (green-blind)

#00346F

Tritanopia (blue-blind)

#00434D

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #173570;
/* rgb */ color: rgb(23, 53, 112);
/* oklch */ color: oklch(34.3% 0.109 262.1);

Tailwind

colors: {
  custom: {
    50: '#636b99',
    500: '#173570',
    950: '#000000',
  },
}

SCSS

$custom: #173570;
$custom-light: #636b99;
$custom-dark: #000000;

JSON

{
  "hex": "#173570",
  "rgb": {
    "r": 23,
    "g": 53,
    "b": 112
  },
  "hsl": {
    "h": 219.775,
    "s": 65.926,
    "l": 26.471
  },
  "oklch": {
    "l": 0.34312,
    "c": 0.10851,
    "h": 262.1
  },
  "luminance": 0.03898
}

Semantic roles & 50–950 ramp

primary

#173570

secondary

#A6823D

accent

#B03FE9

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #173570

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

Preview Lab → · Contrast checker → · Palette generator →