#171D45#171D45

#171D45 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.1% C 0.075 H 273.4°. Best body text is #FFFFFF at 16.18:1 contrast (WCAG AA passes).

Color values

HEX	#171D45
RGB	rgb(23, 29, 69)
HSL	hsl(232, 50%, 18%)
HSV	hsv(232, 67%, 27%)
CMYK	cmyk(66.7%, 58%, 0%, 72.9%)
CIE-LAB	lab(12.55, 11.85, -26.11)
CIE-LCH	lch(12.55, 28.68, 294.41°)
OKLab	oklab(25.06% 0.0044 -0.0748)
OKLCH	oklch(25.06% 0.075 273.4)
XYZ	xyz(1.8665, 1.4904, 5.8184)
Luminance	0.0149 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171D45 #453F17

analogous

#173445 #171D45 #281745

triadic

#171D45 #45171D #1D4517

tetradic

#171D45 #451734 #453F17 #174528

square

#171D45 #451734 #453F17 #174528

split-complementary

#171D45 #452817 #344517

monochromatic

#080A17 #080A17 #171D45 #263073 #3644A1

Accessibility & contrast

On white

16.18

#171D45 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#171D45 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171D45

16.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171D45	#FFFFFF	#000000	##FFFFFF
##171D45	1.00	16.18	1.30	16.18
#FFFFFF	16.18	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#072346

Deuteranopia (green-blind)

#011F44

Tritanopia (blue-blind)

#00262D

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #171d45;
/* rgb */ color: rgb(23, 29, 69);
/* oklch */ color: oklch(25.1% 0.075 273.4);

Tailwind

colors: {
  custom: {
    50: '#595879',
    500: '#171d45',
    950: '#000000',
  },
}

SCSS

$custom: #171d45;
$custom-light: #595879;
$custom-dark: #000000;

JSON

{
  "hex": "#171d45",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 69
  },
  "hsl": {
    "h": 232.174,
    "s": 50,
    "l": 18.039
  },
  "oklch": {
    "l": 0.25063,
    "c": 0.07489,
    "h": 273.4
  },
  "luminance": 0.01491
}

Semantic roles & 50–950 ramp

primary

#171D45

secondary

#7C743C

accent

#C74EDA

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#040309

muted

#79787B

Preview Lab

Preview with #171D45

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

Preview Lab → · Contrast checker → · Palette generator →