#171C72#171C72

#171C72 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.4% C 0.144 H 271.1°. Best body text is #FFFFFF at 14.53:1 contrast (WCAG AA passes).

Color values

HEX	#171C72
RGB	rgb(23, 28, 114)
HSL	hsl(237, 66%, 27%)
HSV	hsv(237, 80%, 45%)
CMYK	cmyk(79.8%, 75.4%, 0%, 55.3%)
CIE-LAB	lab(16.64, 30.36, -49.59)
CIE-LCH	lch(16.64, 58.15, 301.48°)
OKLab	oklab(29.4% 0.0026 -0.1436)
OKLCH	oklch(29.4% 0.144 271.1)
XYZ	xyz(3.8048, 2.2272, 16.1457)
Luminance	0.0223 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171C72 #726D17

analogous

#174A72 #171C72 #401772

triadic

#171C72 #72171C #1C7217

tetradic

#171C72 #72174A #726D17 #177240

square

#171C72 #72174A #726D17 #177240

split-complementary

#171C72 #724017 #4A7217

monochromatic

#050619 #0D0F3F #171C72 #2129A5 #2E38D5

Accessibility & contrast

On white

14.53

#171C72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#171C72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171C72

14.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171C72	#FFFFFF	#000000	##FFFFFF
##171C72	1.00	14.53	1.45	14.53
#FFFFFF	14.53	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E75

Deuteranopia (green-blind)

#002570

Tritanopia (blue-blind)

#003545

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #171c72;
/* rgb */ color: rgb(23, 28, 114);
/* oklch */ color: oklch(29.4% 0.144 271.1);

Tailwind

colors: {
  custom: {
    50: '#65599c',
    500: '#171c72',
    950: '#000000',
  },
}

SCSS

$custom: #171c72;
$custom-light: #65599c;
$custom-dark: #000000;

JSON

{
  "hex": "#171c72",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 114
  },
  "hsl": {
    "h": 236.703,
    "s": 66.423,
    "l": 26.863
  },
  "oklch": {
    "l": 0.29402,
    "c": 0.14359,
    "h": 271.1
  },
  "luminance": 0.02228
}

Semantic roles & 50–950 ramp

primary

#171C72

secondary

#A8A23D

accent

#E03EE9

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #171C72

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

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