#171E63#171E63

#171E63 is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.1% C 0.120 H 271.6°. Best body text is #FFFFFF at 14.97:1 contrast (WCAG AA passes).

Color values

HEX	#171E63
RGB	rgb(23, 30, 99)
HSL	hsl(234, 62%, 24%)
HSV	hsv(234, 77%, 39%)
CMYK	cmyk(76.8%, 69.7%, 0%, 61.2%)
CIE-LAB	lab(15.55, 23.24, -41.58)
CIE-LCH	lch(15.55, 47.63, 299.21°)
OKLab	oklab(28.13% 0.0033 -0.1202)
OKLCH	oklch(28.13% 0.12 271.6)
XYZ	xyz(3.0690, 2.0112, 12.0284)
Luminance	0.0201 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171E63 #635C17

analogous

#174463 #171E63 #361763

triadic

#171E63 #63171E #1E6317

tetradic

#171E63 #631744 #635C17 #176336

square

#171E63 #631744 #635C17 #176336

split-complementary

#171E63 #633617 #446317

monochromatic

#060819 #0B0F31 #171E63 #232D95 #2E3CC6

Accessibility & contrast

On white

14.97

#171E63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#171E63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171E63

14.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171E63	#FFFFFF	#000000	##FFFFFF
##171E63	1.00	14.97	1.40	14.97
#FFFFFF	14.97	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	14.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A65

Deuteranopia (green-blind)

#002362

Tritanopia (blue-blind)

#00303D

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #171e63;
/* rgb */ color: rgb(23, 30, 99);
/* oklch */ color: oklch(28.1% 0.120 271.6);

Tailwind

colors: {
  custom: {
    50: '#615a90',
    500: '#171e63',
    950: '#000000',
  },
}

SCSS

$custom: #171e63;
$custom-light: #615a90;
$custom-dark: #000000;

JSON

{
  "hex": "#171e63",
  "rgb": {
    "r": 23,
    "g": 30,
    "b": 99
  },
  "hsl": {
    "h": 234.474,
    "s": 62.295,
    "l": 23.922
  },
  "oklch": {
    "l": 0.28133,
    "c": 0.12021,
    "h": 271.6
  },
  "luminance": 0.02012
}

Semantic roles & 50–950 ramp

primary

#171E63

secondary

#9A913C

accent

#D642E5

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06030D

muted

#7A787D

Preview Lab

Preview with #171E63

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

Preview Lab → · Contrast checker → · Palette generator →