#171C6E#171C6E

#171C6E is a dark, vivid blue. Relative luminance 0.021; OKLCH L 29.0% C 0.138 H 271.3°. Best body text is #FFFFFF at 14.71:1 contrast (WCAG AA passes).

Color values

HEX	#171C6E
RGB	rgb(23, 28, 110)
HSL	hsl(237, 65%, 26%)
HSV	hsv(237, 79%, 43%)
CMYK	cmyk(79.1%, 74.5%, 0%, 56.9%)
CIE-LAB	lab(16.20, 28.86, -47.72)
CIE-LCH	lch(16.20, 55.77, 301.17°)
OKLab	oklab(28.95% 0.0033 -0.1381)
OKLCH	oklch(28.95% 0.138 271.3)
XYZ	xyz(3.5821, 2.1381, 14.9727)
Luminance	0.0214 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171C6E #6E6917

analogous

#17476E #171C6E #3D176E

triadic

#171C6E #6E171C #1C6E17

tetradic

#171C6E #6E1747 #6E6917 #176E3D

square

#171C6E #6E1747 #6E6917 #176E3D

split-complementary

#171C6E #6E3D17 #476E17

monochromatic

#050619 #0C0F3B #171C6E #2229A1 #2C36D3

Accessibility & contrast

On white

14.71

#171C6E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#171C6E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171C6E

14.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171C6E	#FFFFFF	#000000	##FFFFFF
##171C6E	1.00	14.71	1.43	14.71
#FFFFFF	14.71	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C70

Deuteranopia (green-blind)

#00246D

Tritanopia (blue-blind)

#003343

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #171c6e;
/* rgb */ color: rgb(23, 28, 110);
/* oklch */ color: oklch(29.0% 0.138 271.3);

Tailwind

colors: {
  custom: {
    50: '#645999',
    500: '#171c6e',
    950: '#000000',
  },
}

SCSS

$custom: #171c6e;
$custom-light: #645999;
$custom-dark: #000000;

JSON

{
  "hex": "#171c6e",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 110
  },
  "hsl": {
    "h": 236.552,
    "s": 65.414,
    "l": 26.078
  },
  "oklch": {
    "l": 0.28953,
    "c": 0.13816,
    "h": 271.3
  },
  "luminance": 0.02138
}

Semantic roles & 50–950 ramp

primary

#171C6E

secondary

#A49E3D

accent

#DF3FE8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030E

muted

#7A787E

Preview Lab

Preview with #171C6E

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

Preview Lab → · Contrast checker → · Palette generator →