#171B68#171B68

#171B68 is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.1% C 0.131 H 272.0°. Best body text is #FFFFFF at 15.07:1 contrast (WCAG AA passes).

Color values

HEX	#171B68
RGB	rgb(23, 27, 104)
HSL	hsl(237, 64%, 25%)
HSV	hsv(237, 78%, 41%)
CMYK	cmyk(77.9%, 74%, 0%, 59.2%)
CIE-LAB	lab(15.30, 27.24, -45.27)
CIE-LCH	lch(15.30, 52.83, 301.04°)
OKLab	oklab(28.12% 0.0047 -0.131)
OKLCH	oklch(28.12% 0.131 272)
XYZ	xyz(3.2431, 1.9652, 13.3024)
Luminance	0.0197 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171B68 #686417

analogous

#174468 #171B68 #3C1768

triadic

#171B68 #68171B #1B6817

tetradic

#171B68 #681744 #686417 #17683C

square

#171B68 #681744 #686417 #17683C

split-complementary

#171B68 #683C17 #446817

monochromatic

#060719 #0C0E36 #171B68 #22289A #2D35CC

Accessibility & contrast

On white

15.07

#171B68 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#171B68 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171B68

15.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171B68	#FFFFFF	#000000	##FFFFFF
##171B68	1.00	15.07	1.39	15.07
#FFFFFF	15.07	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A6A

Deuteranopia (green-blind)

#002267

Tritanopia (blue-blind)

#00303F

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #171b68;
/* rgb */ color: rgb(23, 27, 104);
/* oklch */ color: oklch(28.1% 0.131 272.0);

Tailwind

colors: {
  custom: {
    50: '#635894',
    500: '#171b68',
    950: '#000000',
  },
}

SCSS

$custom: #171b68;
$custom-light: #635894;
$custom-dark: #000000;

JSON

{
  "hex": "#171b68",
  "rgb": {
    "r": 23,
    "g": 27,
    "b": 104
  },
  "hsl": {
    "h": 237.037,
    "s": 63.78,
    "l": 24.902
  },
  "oklch": {
    "l": 0.28115,
    "c": 0.13105,
    "h": 272
  },
  "luminance": 0.01966
}

Semantic roles & 50–950 ramp

primary

#171B68

secondary

#9E993D

accent

#DF41E7

background

#F6F5F9

surface

#EBE9F1

border

#C6C5CB

text

#06030D

muted

#7A787E

Preview Lab

Preview with #171B68

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

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