#173870#173870

#173870 is a dark, moderate blue. Relative luminance 0.042; OKLCH L 35.0% C 0.105 H 260.3°. Best body text is #FFFFFF at 11.44:1 contrast (WCAG AA passes).

Color values

HEX	#173870
RGB	rgb(23, 56, 112)
HSL	hsl(218, 66%, 26%)
HSV	hsv(218, 79%, 44%)
CMYK	cmyk(79.5%, 50%, 0%, 56.1%)
CIE-LAB	lab(24.26, 9.88, -35.88)
CIE-LCH	lch(24.26, 37.22, 285.40°)
OKLab	oklab(35.02% -0.0176 -0.103)
OKLCH	oklch(35.02% 0.105 260.3)
XYZ	xyz(4.6911, 4.1798, 15.8856)
Luminance	0.0418 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173870 #704F17

analogous

#176570 #173870 #231770

triadic

#173870 #701738 #387017

tetradic

#173870 #701765 #704F17 #177023

square

#173870 #701765 #704F17 #177023

split-complementary

#173870 #702317 #657017

monochromatic

#050D19 #0D1F3D #173870 #2151A3 #2D6BD4

Accessibility & contrast

On white

11.44

#173870 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#173870 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173870

11.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173870	#FFFFFF	#000000	##FFFFFF
##173870	1.00	11.44	1.84	11.44
#FFFFFF	11.44	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#193E72

Deuteranopia (green-blind)

#01366F

Tritanopia (blue-blind)

#00454E

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173870;
/* rgb */ color: rgb(23, 56, 112);
/* oklch */ color: oklch(35.0% 0.105 260.3);

Tailwind

colors: {
  custom: {
    50: '#626e99',
    500: '#173870',
    950: '#000000',
  },
}

SCSS

$custom: #173870;
$custom-light: #626e99;
$custom-dark: #000000;

JSON

{
  "hex": "#173870",
  "rgb": {
    "r": 23,
    "g": 56,
    "b": 112
  },
  "hsl": {
    "h": 217.753,
    "s": 65.926,
    "l": 26.471
  },
  "oklch": {
    "l": 0.35022,
    "c": 0.10452,
    "h": 260.3
  },
  "luminance": 0.0418
}

Semantic roles & 50–950 ramp

primary

#173870

secondary

#A67F3D

accent

#AA3FE9

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #173870

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

Preview Lab → · Contrast checker → · Palette generator →