#173777#173777

#173777 is a dark, moderate blue. Relative luminance 0.042; OKLCH L 35.3% C 0.116 H 262.2°. Best body text is #FFFFFF at 11.36:1 contrast (WCAG AA passes).

Color values

HEX	#173777
RGB	rgb(23, 55, 119)
HSL	hsl(220, 68%, 28%)
HSV	hsv(220, 81%, 47%)
CMYK	cmyk(80.7%, 53.8%, 0%, 53.3%)
CIE-LAB	lab(24.47, 13.51, -40.00)
CIE-LCH	lch(24.47, 42.22, 288.67°)
OKLab	oklab(35.35% -0.0157 -0.1152)
OKLCH	oklch(35.35% 0.116 262.2)
XYZ	xyz(5.0481, 4.2459, 18.0027)
Luminance	0.0425 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173777 #775717

analogous

#176777 #173777 #271777

triadic

#173777 #771737 #377717

tetradic

#173777 #771767 #775717 #177727

square

#173777 #771767 #775717 #177727

split-complementary

#173777 #772717 #677717

monochromatic

#050C1A #0D1F44 #173777 #214FAA #3169D7

Accessibility & contrast

On white

11.36

#173777 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#173777 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173777

11.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173777	#FFFFFF	#000000	##FFFFFF
##173777	1.00	11.36	1.85	11.36
#FFFFFF	11.36	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C3F79

Deuteranopia (green-blind)

#003676

Tritanopia (blue-blind)

#004651

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173777;
/* rgb */ color: rgb(23, 55, 119);
/* oklch */ color: oklch(35.3% 0.116 262.2);

Tailwind

colors: {
  custom: {
    50: '#646d9f',
    500: '#173777',
    950: '#000000',
  },
}

SCSS

$custom: #173777;
$custom-light: #646d9f;
$custom-dark: #000000;

JSON

{
  "hex": "#173777",
  "rgb": {
    "r": 23,
    "g": 55,
    "b": 119
  },
  "hsl": {
    "h": 220,
    "s": 67.606,
    "l": 27.843
  },
  "oklch": {
    "l": 0.35348,
    "c": 0.11623,
    "h": 262.2
  },
  "luminance": 0.04246
}

Semantic roles & 50–950 ramp

primary

#173777

secondary

#AC873E

accent

#B13DEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #173777

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

Preview Lab → · Contrast checker → · Palette generator →