#171F69#171F69

#171F69 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.0% C 0.128 H 270.9°. Best body text is #FFFFFF at 14.62:1 contrast (WCAG AA passes).

Color values

HEX	#171F69
RGB	rgb(23, 31, 105)
HSL	hsl(234, 64%, 25%)
HSV	hsv(234, 78%, 41%)
CMYK	cmyk(78.1%, 70.5%, 0%, 58.8%)
CIE-LAB	lab(16.41, 24.91, -44.10)
CIE-LCH	lch(16.41, 50.65, 299.46°)
OKLab	oklab(28.95% 0.002 -0.1275)
OKLCH	oklch(28.95% 0.128 270.9)
XYZ	xyz(3.3923, 2.1817, 13.6042)
Luminance	0.0218 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171F69 #696117

analogous

#174869 #171F69 #381769

triadic

#171F69 #69171F #1F6917

tetradic

#171F69 #691748 #696117 #176938

square

#171F69 #691748 #696117 #176938

split-complementary

#171F69 #693817 #486917

monochromatic

#050719 #0C1037 #171F69 #222E9B #2D3DCD

Accessibility & contrast

On white

14.62

#171F69 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#171F69 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171F69

14.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171F69	#FFFFFF	#000000	##FFFFFF
##171F69	1.00	14.62	1.44	14.62
#FFFFFF	14.62	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D6B

Deuteranopia (green-blind)

#002568

Tritanopia (blue-blind)

#003341

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #171f69;
/* rgb */ color: rgb(23, 31, 105);
/* oklch */ color: oklch(29.0% 0.128 270.9);

Tailwind

colors: {
  custom: {
    50: '#635a95',
    500: '#171f69',
    950: '#000000',
  },
}

SCSS

$custom: #171f69;
$custom-light: #635a95;
$custom-dark: #000000;

JSON

{
  "hex": "#171f69",
  "rgb": {
    "r": 23,
    "g": 31,
    "b": 105
  },
  "hsl": {
    "h": 234.146,
    "s": 64.063,
    "l": 25.098
  },
  "oklch": {
    "l": 0.28951,
    "c": 0.12757,
    "h": 270.9
  },
  "luminance": 0.02182
}

Semantic roles & 50–950 ramp

primary

#171F69

secondary

#9F963D

accent

#D741E7

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040D

muted

#7A797E

Preview Lab

Preview with #171F69

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

Preview Lab → · Contrast checker → · Palette generator →