#171F45#171F45

#171F45 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.5% C 0.072 H 271.5°. Best body text is #FFFFFF at 15.93:1 contrast (WCAG AA passes).

Color values

HEX	#171F45
RGB	rgb(23, 31, 69)
HSL	hsl(230, 50%, 18%)
HSV	hsv(230, 67%, 27%)
CMYK	cmyk(66.7%, 55.1%, 0%, 72.9%)
CIE-LAB	lab(13.18, 10.33, -25.09)
CIE-LCH	lch(13.18, 27.14, 292.38°)
OKLab	oklab(25.54% 0.0019 -0.0717)
OKLCH	oklch(25.54% 0.072 271.5)
XYZ	xyz(1.9172, 1.5917, 5.8353)
Luminance	0.0159 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171F45 #453D17

analogous

#173645 #171F45 #261745

triadic

#171F45 #45171F #1F4517

tetradic

#171F45 #451736 #453D17 #174526

square

#171F45 #451736 #453D17 #174526

split-complementary

#171F45 #452617 #364517

monochromatic

#080A17 #080A17 #171F45 #263473 #3648A1

Accessibility & contrast

On white

15.93

#171F45 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#171F45 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171F45

15.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171F45	#FFFFFF	#000000	##FFFFFF
##171F45	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)

#0C2446

Deuteranopia (green-blind)

#052044

Tritanopia (blue-blind)

#00282E

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #171f45;
/* rgb */ color: rgb(23, 31, 69);
/* oklch */ color: oklch(25.5% 0.072 271.5);

Tailwind

colors: {
  custom: {
    50: '#595a79',
    500: '#171f45',
    950: '#000000',
  },
}

SCSS

$custom: #171f45;
$custom-light: #595a79;
$custom-dark: #000000;

JSON

{
  "hex": "#171f45",
  "rgb": {
    "r": 23,
    "g": 31,
    "b": 69
  },
  "hsl": {
    "h": 229.565,
    "s": 50,
    "l": 18.039
  },
  "oklch": {
    "l": 0.25541,
    "c": 0.07177,
    "h": 271.5
  },
  "luminance": 0.01592
}

Semantic roles & 50–950 ramp

primary

#171F45

secondary

#7C713C

accent

#C14EDA

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#040309

muted

#79787B

Preview Lab

Preview with #171F45

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

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