#171C6F#171C6F

#171C6F is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.1% C 0.140 H 271.3°. Best body text is #FFFFFF at 14.66:1 contrast (WCAG AA passes).

Color values

HEX	#171C6F
RGB	rgb(23, 28, 111)
HSL	hsl(237, 66%, 26%)
HSV	hsv(237, 79%, 44%)
CMYK	cmyk(79.3%, 74.8%, 0%, 56.5%)
CIE-LAB	lab(16.31, 29.24, -48.19)
CIE-LCH	lch(16.31, 56.37, 301.25°)
OKLab	oklab(29.07% 0.0031 -0.1395)
OKLCH	oklch(29.07% 0.14 271.3)
XYZ	xyz(3.6369, 2.1600, 15.2611)
Luminance	0.0216 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171C6F #6F6A17

analogous

#17486F #171C6F #3E176F

triadic

#171C6F #6F171C #1C6F17

tetradic

#171C6F #6F1748 #6F6A17 #176F3E

square

#171C6F #6F1748 #6F6A17 #176F3E

split-complementary

#171C6F #6F3E17 #486F17

monochromatic

#050619 #0C0F3C #171C6F #2229A2 #2D36D3

Accessibility & contrast

On white

14.66

#171C6F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#171C6F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171C6F

14.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171C6F	#FFFFFF	#000000	##FFFFFF
##171C6F	1.00	14.66	1.43	14.66
#FFFFFF	14.66	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D71

Deuteranopia (green-blind)

#00246D

Tritanopia (blue-blind)

#003343

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #171c6f;
/* rgb */ color: rgb(23, 28, 111);
/* oklch */ color: oklch(29.1% 0.140 271.3);

Tailwind

colors: {
  custom: {
    50: '#655999',
    500: '#171c6f',
    950: '#000000',
  },
}

SCSS

$custom: #171c6f;
$custom-light: #655999;
$custom-dark: #000000;

JSON

{
  "hex": "#171c6f",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 111
  },
  "hsl": {
    "h": 236.591,
    "s": 65.672,
    "l": 26.275
  },
  "oklch": {
    "l": 0.29065,
    "c": 0.13952,
    "h": 271.3
  },
  "luminance": 0.0216
}

Semantic roles & 50–950 ramp

primary

#171C6F

secondary

#A59F3D

accent

#DF3FE9

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030E

muted

#7A787E

Preview Lab

Preview with #171C6F

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

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