#171878#171878

#171878 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.5% C 0.156 H 271.2°. Best body text is #FFFFFF at 14.60:1 contrast (WCAG AA passes).

Color values

HEX	#171878
RGB	rgb(23, 24, 120)
HSL	hsl(239, 68%, 28%)
HSV	hsv(239, 81%, 47%)
CMYK	cmyk(80.8%, 80%, 0%, 52.9%)
CIE-LAB	lab(16.46, 35.00, -53.75)
CIE-LCH	lch(16.46, 64.14, 303.07°)
OKLab	oklab(29.48% 0.0033 -0.1556)
OKLCH	oklch(29.48% 0.156 271.2)
XYZ	xyz(4.0690, 2.1910, 17.9741)
Luminance	0.0219 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171878 #787717

analogous

#174978 #171878 #461778

triadic

#171878 #781718 #187817

tetradic

#171878 #781749 #787717 #177846

square

#171878 #781749 #787717 #177846

split-complementary

#171878 #784617 #497817

monochromatic

#05051A #0D0E45 #171878 #2122AB #3233D8

Accessibility & contrast

On white

14.60

#171878 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#171878 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171878

14.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171878	#FFFFFF	#000000	##FFFFFF
##171878	1.00	14.60	1.44	14.60
#FFFFFF	14.60	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.60	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: #171878;
/* rgb */ color: rgb(23, 24, 120);
/* oklch */ color: oklch(29.5% 0.156 271.2);

Tailwind

colors: {
  custom: {
    50: '#6857a0',
    500: '#171878',
    950: '#000000',
  },
}

SCSS

$custom: #171878;
$custom-light: #6857a0;
$custom-dark: #000000;

JSON

{
  "hex": "#171878",
  "rgb": {
    "r": 23,
    "g": 24,
    "b": 120
  },
  "hsl": {
    "h": 239.381,
    "s": 67.832,
    "l": 28.039
  },
  "oklch": {
    "l": 0.29481,
    "c": 0.15565,
    "h": 271.2
  },
  "luminance": 0.02191
}

Semantic roles & 50–950 ramp

primary

#171878

secondary

#ADAC3E

accent

#E93DEB

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07030F

muted

#7A787F

Preview Lab

Preview with #171878

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

Preview Lab → · Contrast checker → · Palette generator →