#171D50#171D50

#171D50 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.0% C 0.093 H 273.0°. Best body text is #FFFFFF at 15.81:1 contrast (WCAG AA passes).

Color values

HEX	#171D50
RGB	rgb(23, 29, 80)
HSL	hsl(234, 55%, 20%)
HSV	hsv(234, 71%, 31%)
CMYK	cmyk(71.2%, 63.7%, 0%, 68.6%)
CIE-LAB	lab(13.47, 16.33, -32.20)
CIE-LCH	lch(13.47, 36.10, 296.88°)
OKLab	oklab(26.05% 0.0049 -0.0927)
OKLCH	oklch(26.05% 0.093 273)
XYZ	xyz(2.2402, 1.6399, 7.7863)
Luminance	0.0164 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171D50 #504A17

analogous

#173950 #171D50 #2D1750

triadic

#171D50 #50171D #1D5017

tetradic

#171D50 #501739 #504A17 #17502D

square

#171D50 #501739 #504A17 #17502D

split-complementary

#171D50 #502D17 #395017

monochromatic

#070918 #090C20 #171D50 #252E80 #323FAF

Accessibility & contrast

On white

15.81

#171D50 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#171D50 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171D50

15.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171D50	#FFFFFF	#000000	##FFFFFF
##171D50	1.00	15.81	1.33	15.81
#FFFFFF	15.81	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002552

Deuteranopia (green-blind)

#00204F

Tritanopia (blue-blind)

#002933

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #171d50;
/* rgb */ color: rgb(23, 29, 80);
/* oklch */ color: oklch(26.0% 0.093 273.0);

Tailwind

colors: {
  custom: {
    50: '#5c5882',
    500: '#171d50',
    950: '#000000',
  },
}

SCSS

$custom: #171d50;
$custom-light: #5c5882;
$custom-dark: #000000;

JSON

{
  "hex": "#171d50",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 80
  },
  "hsl": {
    "h": 233.684,
    "s": 55.34,
    "l": 20.196
  },
  "oklch": {
    "l": 0.26048,
    "c": 0.09281,
    "h": 273
  },
  "luminance": 0.0164
}

Semantic roles & 50–950 ramp

primary

#171D50

secondary

#877F3C

accent

#CF49DF

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030A

muted

#79787C

Preview Lab

Preview with #171D50

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

Preview Lab → · Contrast checker → · Palette generator →