#171C4E#171C4E

#171C4E is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.6% C 0.091 H 273.7°. Best body text is #FFFFFF at 16.00:1 contrast (WCAG AA passes).

Color values

HEX	#171C4E
RGB	rgb(23, 28, 78)
HSL	hsl(235, 54%, 20%)
HSV	hsv(235, 71%, 31%)
CMYK	cmyk(70.5%, 64.1%, 0%, 69.4%)
CIE-LAB	lab(13.00, 16.26, -31.60)
CIE-LCH	lch(13.00, 35.54, 297.23°)
OKLab	oklab(25.64% 0.006 -0.0909)
OKLCH	oklch(25.64% 0.091 273.7)
XYZ	xyz(2.1433, 1.5625, 7.3949)
Luminance	0.0156 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171C4E #4E4917

analogous

#17384E #171C4E #2D174E

triadic

#171C4E #4E171C #1C4E17

tetradic

#171C4E #4E1738 #4E4917 #174E2D

square

#171C4E #4E1738 #4E4917 #174E2D

split-complementary

#171C4E #4E2D17 #384E17

monochromatic

#070818 #090B1F #171C4E #252D7D #333EAD

Accessibility & contrast

On white

16.00

#171C4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#171C4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171C4E

16.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171C4E	#FFFFFF	#000000	##FFFFFF
##171C4E	1.00	16.00	1.31	16.00
#FFFFFF	16.00	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002450

Deuteranopia (green-blind)

#001F4D

Tritanopia (blue-blind)

#002831

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #171c4e;
/* rgb */ color: rgb(23, 28, 78);
/* oklch */ color: oklch(25.6% 0.091 273.7);

Tailwind

colors: {
  custom: {
    50: '#5c5880',
    500: '#171c4e',
    950: '#000000',
  },
}

SCSS

$custom: #171c4e;
$custom-light: #5c5880;
$custom-dark: #000000;

JSON

{
  "hex": "#171c4e",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 78
  },
  "hsl": {
    "h": 234.545,
    "s": 54.455,
    "l": 19.804
  },
  "oklch": {
    "l": 0.25642,
    "c": 0.09111,
    "h": 273.7
  },
  "luminance": 0.01563
}

Semantic roles & 50–950 ramp

primary

#171C4E

secondary

#857E3C

accent

#D04ADE

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #171C4E

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

Preview Lab → · Contrast checker → · Palette generator →