#173973#173973

#173973 is a dark, moderate blue. Relative luminance 0.043; OKLCH L 35.5% C 0.108 H 260.4°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#173973
RGB	rgb(23, 57, 115)
HSL	hsl(218, 67%, 27%)
HSV	hsv(218, 80%, 45%)
CMYK	cmyk(80%, 50.4%, 0%, 54.9%)
CIE-LAB	lab(24.78, 10.43, -36.95)
CIE-LCH	lch(24.78, 38.39, 285.76°)
OKLab	oklab(35.49% -0.018 -0.1061)
OKLCH	oklch(35.49% 0.108 260.4)
XYZ	xyz(4.9099, 4.3457, 16.7964)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173973 #735117

analogous

#176773 #173973 #231773

triadic

#173973 #731739 #397317

tetradic

#173973 #731767 #735117 #177323

square

#173973 #731767 #735117 #177323

split-complementary

#173973 #732317 #677317

monochromatic

#050D1A #0D2040 #173973 #2152A6 #2F6CD5

Accessibility & contrast

On white

11.23

#173973 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#173973 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173973

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173973	#FFFFFF	#000000	##FFFFFF
##173973	1.00	11.23	1.87	11.23
#FFFFFF	11.23	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#183F75

Deuteranopia (green-blind)

#003772

Tritanopia (blue-blind)

#004750

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #173973;
/* rgb */ color: rgb(23, 57, 115);
/* oklch */ color: oklch(35.5% 0.108 260.4);

Tailwind

colors: {
  custom: {
    50: '#636e9c',
    500: '#173973',
    950: '#000000',
  },
}

SCSS

$custom: #173973;
$custom-light: #636e9c;
$custom-dark: #000000;

JSON

{
  "hex": "#173973",
  "rgb": {
    "r": 23,
    "g": 57,
    "b": 115
  },
  "hsl": {
    "h": 217.826,
    "s": 66.667,
    "l": 27.059
  },
  "oklch": {
    "l": 0.35494,
    "c": 0.10766,
    "h": 260.4
  },
  "luminance": 0.04346
}

Semantic roles & 50–950 ramp

primary

#173973

secondary

#A9813D

accent

#AA3EEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #173973

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

Preview Lab → · Contrast checker → · Palette generator →