#171366#171366

#171366 is a dark, vivid blue. Relative luminance 0.016; OKLCH L 26.6% C 0.137 H 273.9°. Best body text is #FFFFFF at 15.89:1 contrast (WCAG AA passes).

Color values

HEX	#171366
RGB	rgb(23, 19, 102)
HSL	hsl(243, 69%, 24%)
HSV	hsv(243, 81%, 40%)
CMYK	cmyk(77.5%, 81.4%, 0%, 60%)
CIE-LAB	lab(13.27, 31.56, -47.30)
CIE-LCH	lch(13.27, 56.86, 303.71°)
OKLab	oklab(26.6% 0.0094 -0.1368)
OKLCH	oklch(26.6% 0.137 273.9)
XYZ	xyz(2.9837, 1.6069, 12.7207)
Luminance	0.0161 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171366 #626613

analogous

#133866 #171366 #401366

triadic

#171366 #661713 #136617

tetradic

#171366 #661338 #626613 #136640

square

#171366 #661338 #626613 #136640

split-complementary

#171366 #664013 #386613

monochromatic

#06051A #0B0932 #171366 #231D9A #2E26CD

Accessibility & contrast

On white

15.89

#171366 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#171366 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171366

15.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171366	#FFFFFF	#000000	##FFFFFF
##171366	1.00	15.89	1.32	15.89
#FFFFFF	15.89	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002668

Deuteranopia (green-blind)

#001E65

Tritanopia (blue-blind)

#002C3C

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #171366;
/* rgb */ color: rgb(23, 19, 102);
/* oklch */ color: oklch(26.6% 0.137 273.9);

Tailwind

colors: {
  custom: {
    50: '#635293',
    500: '#171366',
    950: '#000000',
  },
}

SCSS

$custom: #171366;
$custom-light: #635293;
$custom-dark: #000000;

JSON

{
  "hex": "#171366",
  "rgb": {
    "r": 23,
    "g": 19,
    "b": 102
  },
  "hsl": {
    "h": 242.892,
    "s": 68.595,
    "l": 23.725
  },
  "oklch": {
    "l": 0.26602,
    "c": 0.13716,
    "h": 273.9
  },
  "luminance": 0.01607
}

Semantic roles & 50–950 ramp

primary

#171366

secondary

#999D37

accent

#EB3CE3

background

#F6F4F9

surface

#EBE7F1

border

#C6C3CB

text

#06020D

muted

#7A787E

Preview Lab

Preview with #171366

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

Preview Lab → · Contrast checker → · Palette generator →