#173972#173972

#173972 is a dark, moderate blue. Relative luminance 0.043; OKLCH L 35.4% C 0.106 H 260.1°. Best body text is #FFFFFF at 11.26:1 contrast (WCAG AA passes).

Color values

HEX	#173972
RGB	rgb(23, 57, 114)
HSL	hsl(218, 66%, 27%)
HSV	hsv(218, 80%, 45%)
CMYK	cmyk(79.8%, 50%, 0%, 55.3%)
CIE-LAB	lab(24.71, 10.01, -36.43)
CIE-LCH	lch(24.71, 37.78, 285.36°)
OKLab	oklab(35.42% -0.0182 -0.1046)
OKLCH	oklch(35.42% 0.106 260.1)
XYZ	xyz(4.8526, 4.3228, 16.4950)
Luminance	0.0432 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173972 #725017

analogous

#176772 #173972 #221772

triadic

#173972 #721739 #397217

tetradic

#173972 #721767 #725017 #177222

square

#173972 #721767 #725017 #177222

split-complementary

#173972 #722217 #677217

monochromatic

#050D19 #0D203F #173972 #2152A5 #2E6DD5

Accessibility & contrast

On white

11.26

#173972 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#173972 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173972

11.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173972	#FFFFFF	#000000	##FFFFFF
##173972	1.00	11.26	1.86	11.26
#FFFFFF	11.26	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#193F74

Deuteranopia (green-blind)

#003771

Tritanopia (blue-blind)

#004750

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #173972;
/* rgb */ color: rgb(23, 57, 114);
/* oklch */ color: oklch(35.4% 0.106 260.1);

Tailwind

colors: {
  custom: {
    50: '#636e9b',
    500: '#173972',
    950: '#000000',
  },
}

SCSS

$custom: #173972;
$custom-light: #636e9b;
$custom-dark: #000000;

JSON

{
  "hex": "#173972",
  "rgb": {
    "r": 23,
    "g": 57,
    "b": 114
  },
  "hsl": {
    "h": 217.582,
    "s": 66.423,
    "l": 26.863
  },
  "oklch": {
    "l": 0.35416,
    "c": 0.10618,
    "h": 260.1
  },
  "luminance": 0.04323
}

Semantic roles & 50–950 ramp

primary

#173972

secondary

#A8803D

accent

#A93EE9

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #173972

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

Preview Lab → · Contrast checker → · Palette generator →