#171666#171666

#171666 is a dark, vivid blue. Relative luminance 0.017; OKLCH L 27.1% C 0.134 H 273.4°. Best body text is #FFFFFF at 15.64:1 contrast (WCAG AA passes).

Color values

HEX	#171666
RGB	rgb(23, 22, 102)
HSL	hsl(241, 65%, 24%)
HSV	hsv(241, 78%, 40%)
CMYK	cmyk(77.5%, 78.4%, 0%, 60%)
CIE-LAB	lab(13.91, 29.73, -46.24)
CIE-LCH	lch(13.91, 54.98, 302.74°)
OKLab	oklab(27.06% 0.0079 -0.1338)
OKLCH	oklch(27.06% 0.134 273.4)
XYZ	xyz(3.0377, 1.7150, 12.7387)
Luminance	0.0171 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171666 #656616

analogous

#163D66 #171666 #3F1666

triadic

#171666 #661716 #166617

tetradic

#171666 #66163D #656616 #16663F

square

#171666 #66163D #656616 #16663F

split-complementary

#171666 #663F16 #3D6616

monochromatic

#060519 #0C0B34 #171666 #222198 #2E2CCB

Accessibility & contrast

On white

15.64

#171666 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#171666 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171666

15.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171666	#FFFFFF	#000000	##FFFFFF
##171666	1.00	15.64	1.34	15.64
#FFFFFF	15.64	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002768

Deuteranopia (green-blind)

#002065

Tritanopia (blue-blind)

#002D3D

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #171666;
/* rgb */ color: rgb(23, 22, 102);
/* oklch */ color: oklch(27.1% 0.134 273.4);

Tailwind

colors: {
  custom: {
    50: '#635493',
    500: '#171666',
    950: '#000000',
  },
}

SCSS

$custom: #171666;
$custom-light: #635493;
$custom-dark: #000000;

JSON

{
  "hex": "#171666",
  "rgb": {
    "r": 23,
    "g": 22,
    "b": 102
  },
  "hsl": {
    "h": 240.75,
    "s": 64.516,
    "l": 24.314
  },
  "oklch": {
    "l": 0.27055,
    "c": 0.13401,
    "h": 273.4
  },
  "luminance": 0.01715
}

Semantic roles & 50–950 ramp

primary

#171666

secondary

#9B9D3B

accent

#E840E5

background

#F6F4F9

surface

#EBE7F1

border

#C6C3CB

text

#06030D

muted

#7A787E

Preview Lab

Preview with #171666

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

Preview Lab → · Contrast checker → · Palette generator →