#171F47#171F47

#171F47 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.7% C 0.075 H 271.6°. Best body text is #FFFFFF at 15.87:1 contrast (WCAG AA passes).

Color values

HEX	#171F47
RGB	rgb(23, 31, 71)
HSL	hsl(230, 51%, 18%)
HSV	hsv(230, 68%, 28%)
CMYK	cmyk(67.6%, 56.3%, 0%, 72.2%)
CIE-LAB	lab(13.33, 11.15, -26.24)
CIE-LCH	lch(13.33, 28.51, 293.02°)
OKLab	oklab(25.71% 0.0022 -0.0751)
OKLCH	oklch(25.71% 0.075 271.6)
XYZ	xyz(1.9803, 1.6169, 6.1678)
Luminance	0.0162 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171F47 #473F17

analogous

#173747 #171F47 #271747

triadic

#171F47 #47171F #1F4717

tetradic

#171F47 #471737 #473F17 #174727

square

#171F47 #471737 #473F17 #174727

split-complementary

#171F47 #472717 #374717

monochromatic

#070A17 #080B19 #171F47 #263375 #3547A3

Accessibility & contrast

On white

15.87

#171F47 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#171F47 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171F47

15.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171F47	#FFFFFF	#000000	##FFFFFF
##171F47	1.00	15.87	1.32	15.87
#FFFFFF	15.87	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#092448

Deuteranopia (green-blind)

#022046

Tritanopia (blue-blind)

#00282F

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #171f47;
/* rgb */ color: rgb(23, 31, 71);
/* oklch */ color: oklch(25.7% 0.075 271.6);

Tailwind

colors: {
  custom: {
    50: '#5a5a7a',
    500: '#171f47',
    950: '#000000',
  },
}

SCSS

$custom: #171f47;
$custom-light: #5a5a7a;
$custom-dark: #000000;

JSON

{
  "hex": "#171f47",
  "rgb": {
    "r": 23,
    "g": 31,
    "b": 71
  },
  "hsl": {
    "h": 230,
    "s": 51.064,
    "l": 18.431
  },
  "oklch": {
    "l": 0.25707,
    "c": 0.07513,
    "h": 271.6
  },
  "luminance": 0.01617
}

Semantic roles & 50–950 ramp

primary

#171F47

secondary

#7E733C

accent

#C34DDB

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#040309

muted

#79787B

Preview Lab

Preview with #171F47

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

Preview Lab → · Contrast checker → · Palette generator →