#171C85#171C85

#171C85 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.6% C 0.168 H 269.8°. Best body text is #FFFFFF at 13.63:1 contrast (WCAG AA passes).

Color values

HEX	#171C85
RGB	rgb(23, 28, 133)
HSL	hsl(237, 71%, 31%)
HSV	hsv(237, 83%, 52%)
CMYK	cmyk(82.7%, 78.9%, 0%, 47.8%)
CIE-LAB	lab(18.82, 37.26, -58.10)
CIE-LCH	lch(18.82, 69.02, 302.67°)
OKLab	oklab(31.6% -0.0006 -0.1683)
OKLCH	oklch(31.6% 0.168 269.8)
XYZ	xyz(5.0008, 2.7055, 22.4444)
Luminance	0.0271 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171C85 #858017

analogous

#175385 #171C85 #491785

triadic

#171C85 #85171C #1C8517

tetradic

#171C85 #851753 #858017 #178549

square

#171C85 #851753 #858017 #178549

split-complementary

#171C85 #854917 #538517

monochromatic

#05061D #0E1151 #171C85 #2027B9 #3A41DD

Accessibility & contrast

On white

13.63

#171C85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#171C85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171C85

13.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171C85	#FFFFFF	#000000	##FFFFFF
##171C85	1.00	13.63	1.54	13.63
#FFFFFF	13.63	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003388

Deuteranopia (green-blind)

#002883

Tritanopia (blue-blind)

#003C50

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #171c85;
/* rgb */ color: rgb(23, 28, 133);
/* oklch */ color: oklch(31.6% 0.168 269.8);

Tailwind

colors: {
  custom: {
    50: '#6b5aaa',
    500: '#171c85',
    950: '#000000',
  },
}

SCSS

$custom: #171c85;
$custom-light: #6b5aaa;
$custom-dark: #000000;

JSON

{
  "hex": "#171c85",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 133
  },
  "hsl": {
    "h": 237.273,
    "s": 70.513,
    "l": 30.588
  },
  "oklch": {
    "l": 0.31602,
    "c": 0.16831,
    "h": 269.8
  },
  "luminance": 0.02706
}

Semantic roles & 50–950 ramp

primary

#171C85

secondary

#B9B33F

accent

#E53BED

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #171C85

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

Preview Lab → · Contrast checker → · Palette generator →