#171C8F#171C8F

#171C8F is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.8% C 0.181 H 269.2°. Best body text is #FFFFFF at 13.13:1 contrast (WCAG AA passes).

Color values

HEX	#171C8F
RGB	rgb(23, 28, 143)
HSL	hsl(238, 72%, 33%)
HSV	hsv(238, 84%, 56%)
CMYK	cmyk(83.9%, 80.4%, 0%, 43.9%)
CIE-LAB	lab(20.02, 40.72, -62.38)
CIE-LCH	lch(20.02, 74.49, 303.13°)
OKLab	oklab(32.8% -0.0024 -0.1807)
OKLCH	oklch(32.8% 0.181 269.2)
XYZ	xyz(5.7248, 2.9952, 26.2577)
Luminance	0.0300 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171C8F #8F8A17

analogous

#17588F #171C8F #4E178F

triadic

#171C8F #8F171C #1C8F17

tetradic

#171C8F #8F1758 #8F8A17 #178F4E

square

#171C8F #8F1758 #8F8A17 #178F4E

split-complementary

#171C8F #8F4E17 #588F17

monochromatic

#060726 #0F125A #171C8F #1F26C4 #4047E0

Accessibility & contrast

On white

13.13

#171C8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#171C8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171C8F

13.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171C8F	#FFFFFF	#000000	##FFFFFF
##171C8F	1.00	13.13	1.60	13.13
#FFFFFF	13.13	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003692

Deuteranopia (green-blind)

#002A8D

Tritanopia (blue-blind)

#004055

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #171c8f;
/* rgb */ color: rgb(23, 28, 143);
/* oklch */ color: oklch(32.8% 0.181 269.2);

Tailwind

colors: {
  custom: {
    50: '#6e5ab1',
    500: '#171c8f',
    950: '#000000',
  },
}

SCSS

$custom: #171c8f;
$custom-light: #6e5ab1;
$custom-dark: #000000;

JSON

{
  "hex": "#171c8f",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 143
  },
  "hsl": {
    "h": 237.5,
    "s": 72.289,
    "l": 32.549
  },
  "oklch": {
    "l": 0.32796,
    "c": 0.18071,
    "h": 269.2
  },
  "luminance": 0.02996
}

Semantic roles & 50–950 ramp

primary

#171C8F

secondary

#C1BB41

accent

#E739EF

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #171C8F

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

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