#171B69#171B69

#171B69 is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.2% C 0.132 H 272.0°. Best body text is #FFFFFF at 15.03:1 contrast (WCAG AA passes).

Color values

HEX	#171B69
RGB	rgb(23, 27, 105)
HSL	hsl(237, 64%, 25%)
HSV	hsv(237, 78%, 41%)
CMYK	cmyk(78.1%, 74.3%, 0%, 58.8%)
CIE-LAB	lab(15.41, 27.63, -45.75)
CIE-LCH	lch(15.41, 53.44, 301.13°)
OKLab	oklab(28.23% 0.0045 -0.1324)
OKLCH	oklch(28.23% 0.132 272)
XYZ	xyz(3.2942, 1.9856, 13.5715)
Luminance	0.0199 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171B69 #696517

analogous

#174469 #171B69 #3C1769

triadic

#171B69 #69171B #1B6917

tetradic

#171B69 #691744 #696517 #17693C

square

#171B69 #691744 #696517 #17693C

split-complementary

#171B69 #693C17 #446917

monochromatic

#050619 #0C0E37 #171B69 #22289B #2D35CD

Accessibility & contrast

On white

15.03

#171B69 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#171B69 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171B69

15.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171B69	#FFFFFF	#000000	##FFFFFF
##171B69	1.00	15.03	1.40	15.03
#FFFFFF	15.03	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	15.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A6B

Deuteranopia (green-blind)

#002368

Tritanopia (blue-blind)

#003140

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #171b69;
/* rgb */ color: rgb(23, 27, 105);
/* oklch */ color: oklch(28.2% 0.132 272.0);

Tailwind

colors: {
  custom: {
    50: '#635895',
    500: '#171b69',
    950: '#000000',
  },
}

SCSS

$custom: #171b69;
$custom-light: #635895;
$custom-dark: #000000;

JSON

{
  "hex": "#171b69",
  "rgb": {
    "r": 23,
    "g": 27,
    "b": 105
  },
  "hsl": {
    "h": 237.073,
    "s": 64.063,
    "l": 25.098
  },
  "oklch": {
    "l": 0.28226,
    "c": 0.13245,
    "h": 272
  },
  "luminance": 0.01986
}

Semantic roles & 50–950 ramp

primary

#171B69

secondary

#9F9A3D

accent

#DF41E7

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030D

muted

#7A787E

Preview Lab

Preview with #171B69

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

Preview Lab → · Contrast checker → · Palette generator →