#171C50#171C50

#171C50 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.8% C 0.094 H 273.6°. Best body text is #FFFFFF at 15.93:1 contrast (WCAG AA passes).

Color values

HEX	#171C50
RGB	rgb(23, 28, 80)
HSL	hsl(235, 55%, 20%)
HSV	hsv(235, 71%, 31%)
CMYK	cmyk(71.2%, 65%, 0%, 68.6%)
CIE-LAB	lab(13.18, 17.07, -32.68)
CIE-LCH	lch(13.18, 36.87, 297.58°)
OKLab	oklab(25.83% 0.0059 -0.0941)
OKLCH	oklch(25.83% 0.094 273.6)
XYZ	xyz(2.2161, 1.5917, 7.7783)
Luminance	0.0159 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171C50 #504B17

analogous

#173850 #171C50 #2E1750

triadic

#171C50 #50171C #1C5017

tetradic

#171C50 #501738 #504B17 #17502E

square

#171C50 #501738 #504B17 #17502E

split-complementary

#171C50 #502E17 #385017

monochromatic

#070818 #090B20 #171C50 #252D80 #323DAF

Accessibility & contrast

On white

15.93

#171C50 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#171C50 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171C50

15.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171C50	#FFFFFF	#000000	##FFFFFF
##171C50	1.00	15.93	1.32	15.93
#FFFFFF	15.93	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002552

Deuteranopia (green-blind)

#001F4F

Tritanopia (blue-blind)

#002932

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #171c50;
/* rgb */ color: rgb(23, 28, 80);
/* oklch */ color: oklch(25.8% 0.094 273.6);

Tailwind

colors: {
  custom: {
    50: '#5c5882',
    500: '#171c50',
    950: '#000000',
  },
}

SCSS

$custom: #171c50;
$custom-light: #5c5882;
$custom-dark: #000000;

JSON

{
  "hex": "#171c50",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 80
  },
  "hsl": {
    "h": 234.737,
    "s": 55.34,
    "l": 20.196
  },
  "oklch": {
    "l": 0.25831,
    "c": 0.09428,
    "h": 273.6
  },
  "luminance": 0.01592
}

Semantic roles & 50–950 ramp

primary

#171C50

secondary

#87813C

accent

#D249DF

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030A

muted

#79787C

Preview Lab

Preview with #171C50

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

Preview Lab → · Contrast checker → · Palette generator →