#171778#171778

#171778 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.3% C 0.157 H 271.3°. Best body text is #FFFFFF at 14.68:1 contrast (WCAG AA passes).

Color values

HEX	#171778
RGB	rgb(23, 23, 120)
HSL	hsl(240, 68%, 28%)
HSV	hsv(240, 81%, 47%)
CMYK	cmyk(80.8%, 80.8%, 0%, 52.9%)
CIE-LAB	lab(16.26, 35.58, -54.08)
CIE-LCH	lch(16.26, 64.73, 303.34°)
OKLab	oklab(29.34% 0.0037 -0.1566)
OKLCH	oklch(29.34% 0.157 271.3)
XYZ	xyz(4.0488, 2.1506, 17.9674)
Luminance	0.0215 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171778 #787817

analogous

#174778 #171778 #471778

triadic

#171778 #781717 #177817

tetradic

#171778 #781747 #787817 #177847

square

#171778 #781747 #787817 #177847

split-complementary

#171778 #784717 #477817

monochromatic

#05051A #0D0D45 #171778 #2121AB #3232D8

Accessibility & contrast

On white

14.68

#171778 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#171778 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171778

14.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171778	#FFFFFF	#000000	##FFFFFF
##171778	1.00	14.68	1.43	14.68
#FFFFFF	14.68	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D7B

Deuteranopia (green-blind)

#002376

Tritanopia (blue-blind)

#003547

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #171778;
/* rgb */ color: rgb(23, 23, 120);
/* oklch */ color: oklch(29.3% 0.157 271.3);

Tailwind

colors: {
  custom: {
    50: '#6856a0',
    500: '#171778',
    950: '#000000',
  },
}

SCSS

$custom: #171778;
$custom-light: #6856a0;
$custom-dark: #000000;

JSON

{
  "hex": "#171778",
  "rgb": {
    "r": 23,
    "g": 23,
    "b": 120
  },
  "hsl": {
    "h": 240,
    "s": 67.832,
    "l": 28.039
  },
  "oklch": {
    "l": 0.29339,
    "c": 0.15662,
    "h": 271.3
  },
  "luminance": 0.02151
}

Semantic roles & 50–950 ramp

primary

#171778

secondary

#ADAD3E

accent

#EB3DEB

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07030F

muted

#7A787F

Preview Lab

Preview with #171778

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

Preview Lab → · Contrast checker → · Palette generator →