#173156#173156

#173156 is a dark, moderate blue. Relative luminance 0.031; OKLCH L 31.4% C 0.074 H 257.5°. Best body text is #FFFFFF at 13.04:1 contrast (WCAG AA passes).

Color values

HEX	#173156
RGB	rgb(23, 49, 86)
HSL	hsl(215, 58%, 21%)
HSV	hsv(215, 73%, 34%)
CMYK	cmyk(73.3%, 43%, 0%, 66.3%)
CIE-LAB	lab(20.24, 4.05, -25.35)
CIE-LCH	lch(20.24, 25.68, 279.08°)
OKLab	oklab(31.35% -0.016 -0.0722)
OKLCH	oklch(31.35% 0.074 257.5)
XYZ	xyz(3.1308, 3.0504, 9.2261)
Luminance	0.0305 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173156 #563C17

analogous

#175156 #173156 #1D1756

triadic

#173156 #561731 #315617

tetradic

#173156 #561751 #563C17 #17561D

square

#173156 #561751 #563C17 #17561D

split-complementary

#173156 #561D17 #515617

monochromatic

#060E18 #0A1526 #173156 #244D86 #3168B7

Accessibility & contrast

On white

13.04

#173156 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#173156 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173156

13.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173156	#FFFFFF	#000000	##FFFFFF
##173156	1.00	13.04	1.61	13.04
#FFFFFF	13.04	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#203457

Deuteranopia (green-blind)

#172E55

Tritanopia (blue-blind)

#003A3F

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #173156;
/* rgb */ color: rgb(23, 49, 86);
/* oklch */ color: oklch(31.4% 0.074 257.5);

Tailwind

colors: {
  custom: {
    50: '#5c6886',
    500: '#173156',
    950: '#000000',
  },
}

SCSS

$custom: #173156;
$custom-light: #5c6886;
$custom-dark: #000000;

JSON

{
  "hex": "#173156",
  "rgb": {
    "r": 23,
    "g": 49,
    "b": 86
  },
  "hsl": {
    "h": 215.238,
    "s": 57.798,
    "l": 21.373
  },
  "oklch": {
    "l": 0.31353,
    "c": 0.07398,
    "h": 257.5
  },
  "luminance": 0.03051
}

Semantic roles & 50–950 ramp

primary

#173156

secondary

#8D6B3C

accent

#A147E1

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04060B

muted

#797A7C

Preview Lab

Preview with #173156

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

Preview Lab → · Contrast checker → · Palette generator →