#171978#171978

#171978 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.6% C 0.155 H 271.1°. Best body text is #FFFFFF at 14.52:1 contrast (WCAG AA passes).

Color values

HEX	#171978
RGB	rgb(23, 25, 120)
HSL	hsl(239, 68%, 28%)
HSV	hsv(239, 81%, 47%)
CMYK	cmyk(80.8%, 79.2%, 0%, 52.9%)
CIE-LAB	lab(16.67, 34.41, -53.41)
CIE-LCH	lch(16.67, 63.53, 302.80°)
OKLab	oklab(29.63% 0.0029 -0.1546)
OKLCH	oklch(29.63% 0.155 271.1)
XYZ	xyz(4.0900, 2.2330, 17.9811)
Luminance	0.0223 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171978 #787617

analogous

#174978 #171978 #451778

triadic

#171978 #781719 #197817

tetradic

#171978 #781749 #787617 #177845

square

#171978 #781749 #787617 #177845

split-complementary

#171978 #784517 #497817

monochromatic

#05051A #0D0E45 #171978 #2124AB #3235D8

Accessibility & contrast

On white

14.52

#171978 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#171978 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171978

14.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171978	#FFFFFF	#000000	##FFFFFF
##171978	1.00	14.52	1.45	14.52
#FFFFFF	14.52	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E7B

Deuteranopia (green-blind)

#002476

Tritanopia (blue-blind)

#003547

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #171978;
/* rgb */ color: rgb(23, 25, 120);
/* oklch */ color: oklch(29.6% 0.155 271.1);

Tailwind

colors: {
  custom: {
    50: '#6757a0',
    500: '#171978',
    950: '#000000',
  },
}

SCSS

$custom: #171978;
$custom-light: #6757a0;
$custom-dark: #000000;

JSON

{
  "hex": "#171978",
  "rgb": {
    "r": 23,
    "g": 25,
    "b": 120
  },
  "hsl": {
    "h": 238.763,
    "s": 67.832,
    "l": 28.039
  },
  "oklch": {
    "l": 0.29626,
    "c": 0.15467,
    "h": 271.1
  },
  "luminance": 0.02233
}

Semantic roles & 50–950 ramp

primary

#171978

secondary

#ADAB3E

accent

#E73DEB

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07030F

muted

#7A787F

Preview Lab

Preview with #171978

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

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