#171D47#171D47

#171D47 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.2% C 0.078 H 273.3°. Best body text is #FFFFFF at 16.11:1 contrast (WCAG AA passes).

Color values

HEX	#171D47
RGB	rgb(23, 29, 71)
HSL	hsl(233, 51%, 18%)
HSV	hsv(233, 68%, 28%)
CMYK	cmyk(67.6%, 59.2%, 0%, 72.2%)
CIE-LAB	lab(12.71, 12.66, -27.24)
CIE-LCH	lch(12.71, 30.04, 294.93°)
OKLab	oklab(25.24% 0.0046 -0.0781)
OKLCH	oklch(25.24% 0.078 273.3)
XYZ	xyz(1.9297, 1.5157, 6.1509)
Luminance	0.0152 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171D47 #474117

analogous

#173547 #171D47 #291747

triadic

#171D47 #47171D #1D4717

tetradic

#171D47 #471735 #474117 #174729

square

#171D47 #471735 #474117 #174729

split-complementary

#171D47 #472917 #354717

monochromatic

#070917 #080A19 #171D47 #263075 #3543A3

Accessibility & contrast

On white

16.11

#171D47 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#171D47 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171D47

16.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171D47	#FFFFFF	#000000	##FFFFFF
##171D47	1.00	16.11	1.30	16.11
#FFFFFF	16.11	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#042348

Deuteranopia (green-blind)

#001F46

Tritanopia (blue-blind)

#00272E

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #171d47;
/* rgb */ color: rgb(23, 29, 71);
/* oklch */ color: oklch(25.2% 0.078 273.3);

Tailwind

colors: {
  custom: {
    50: '#5a587a',
    500: '#171d47',
    950: '#000000',
  },
}

SCSS

$custom: #171d47;
$custom-light: #5a587a;
$custom-dark: #000000;

JSON

{
  "hex": "#171d47",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 71
  },
  "hsl": {
    "h": 232.5,
    "s": 51.064,
    "l": 18.431
  },
  "oklch": {
    "l": 0.25235,
    "c": 0.07823,
    "h": 273.3
  },
  "luminance": 0.01516
}

Semantic roles & 50–950 ramp

primary

#171D47

secondary

#7E763C

accent

#C94DDB

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#040309

muted

#79787B

Preview Lab

Preview with #171D47

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

Preview Lab → · Contrast checker → · Palette generator →