#173670#173670

#173670 is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.5% C 0.107 H 261.5°. Best body text is #FFFFFF at 11.68:1 contrast (WCAG AA passes).

Color values

HEX	#173670
RGB	rgb(23, 54, 112)
HSL	hsl(219, 66%, 26%)
HSV	hsv(219, 79%, 44%)
CMYK	cmyk(79.5%, 51.8%, 0%, 56.1%)
CIE-LAB	lab(23.64, 11.31, -36.88)
CIE-LCH	lch(23.64, 38.57, 287.05°)
OKLab	oklab(34.55% -0.0158 -0.106)
OKLCH	oklch(34.55% 0.107 261.5)
XYZ	xyz(4.5961, 3.9898, 15.8540)
Luminance	0.0399 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173670 #705117

analogous

#176370 #173670 #251770

triadic

#173670 #701736 #367017

tetradic

#173670 #701763 #705117 #177025

square

#173670 #701763 #705117 #177025

split-complementary

#173670 #702517 #637017

monochromatic

#050C19 #0D1E3D #173670 #214EA3 #2D67D4

Accessibility & contrast

On white

11.68

#173670 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#173670 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173670

11.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173670	#FFFFFF	#000000	##FFFFFF
##173670	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)

#143D72

Deuteranopia (green-blind)

#00346F

Tritanopia (blue-blind)

#00444D

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #173670;
/* rgb */ color: rgb(23, 54, 112);
/* oklch */ color: oklch(34.5% 0.107 261.5);

Tailwind

colors: {
  custom: {
    50: '#636c99',
    500: '#173670',
    950: '#000000',
  },
}

SCSS

$custom: #173670;
$custom-light: #636c99;
$custom-dark: #000000;

JSON

{
  "hex": "#173670",
  "rgb": {
    "r": 23,
    "g": 54,
    "b": 112
  },
  "hsl": {
    "h": 219.101,
    "s": 65.926,
    "l": 26.471
  },
  "oklch": {
    "l": 0.34547,
    "c": 0.10717,
    "h": 261.5
  },
  "luminance": 0.0399
}

Semantic roles & 50–950 ramp

primary

#173670

secondary

#A6813D

accent

#AE3FE9

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #173670

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

Preview Lab → · Contrast checker → · Palette generator →