#171F64#171F64

#171F64 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.4% C 0.120 H 271.2°. Best body text is #FFFFFF at 14.83:1 contrast (WCAG AA passes).

Color values

HEX	#171F64
RGB	rgb(23, 31, 100)
HSL	hsl(234, 63%, 24%)
HSV	hsv(234, 77%, 39%)
CMYK	cmyk(77%, 69%, 0%, 60.8%)
CIE-LAB	lab(15.91, 22.93, -41.64)
CIE-LCH	lch(15.91, 47.54, 298.85°)
OKLab	oklab(28.43% 0.0025 -0.1203)
OKLCH	oklch(28.43% 0.12 271.2)
XYZ	xyz(3.1428, 2.0819, 12.2903)
Luminance	0.0208 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171F64 #645C17

analogous

#174664 #171F64 #361764

triadic

#171F64 #64171F #1F6417

tetradic

#171F64 #641746 #645C17 #176436

square

#171F64 #641746 #645C17 #176436

split-complementary

#171F64 #643617 #466417

monochromatic

#060819 #0C1032 #171F64 #222E96 #2E3EC8

Accessibility & contrast

On white

14.83

#171F64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#171F64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171F64

14.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171F64	#FFFFFF	#000000	##FFFFFF
##171F64	1.00	14.83	1.42	14.83
#FFFFFF	14.83	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B66

Deuteranopia (green-blind)

#002463

Tritanopia (blue-blind)

#00313E

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #171f64;
/* rgb */ color: rgb(23, 31, 100);
/* oklch */ color: oklch(28.4% 0.120 271.2);

Tailwind

colors: {
  custom: {
    50: '#615a91',
    500: '#171f64',
    950: '#000000',
  },
}

SCSS

$custom: #171f64;
$custom-light: #615a91;
$custom-dark: #000000;

JSON

{
  "hex": "#171f64",
  "rgb": {
    "r": 23,
    "g": 31,
    "b": 100
  },
  "hsl": {
    "h": 233.766,
    "s": 62.602,
    "l": 24.118
  },
  "oklch": {
    "l": 0.28431,
    "c": 0.12037,
    "h": 271.2
  },
  "luminance": 0.02082
}

Semantic roles & 50–950 ramp

primary

#171F64

secondary

#9A913C

accent

#D542E6

background

#F6F5F9

surface

#EBE9F1

border

#C6C5CB

text

#06040D

muted

#7A797E

Preview Lab

Preview with #171F64

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

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