#171F6A#171F6A

#171F6A is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.1% C 0.129 H 270.9°. Best body text is #FFFFFF at 14.58:1 contrast (WCAG AA passes).

Color values

HEX	#171F6A
RGB	rgb(23, 31, 106)
HSL	hsl(234, 64%, 25%)
HSV	hsv(234, 78%, 42%)
CMYK	cmyk(78.3%, 70.8%, 0%, 58.4%)
CIE-LAB	lab(16.52, 25.30, -44.59)
CIE-LCH	lch(16.52, 51.27, 299.57°)
OKLab	oklab(29.06% 0.002 -0.129)
OKLCH	oklch(29.06% 0.129 270.9)
XYZ	xyz(3.4440, 2.2024, 13.8765)
Luminance	0.0220 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171F6A #6A6217

analogous

#17486A #171F6A #38176A

triadic

#171F6A #6A171F #1F6A17

tetradic

#171F6A #6A1748 #6A6217 #176A38

square

#171F6A #6A1748 #6A6217 #176A38

split-complementary

#171F6A #6A3817 #486A17

monochromatic

#050719 #0C1038 #171F6A #222E9C #2D3CCF

Accessibility & contrast

On white

14.58

#171F6A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#171F6A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171F6A

14.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171F6A	#FFFFFF	#000000	##FFFFFF
##171F6A	1.00	14.58	1.44	14.58
#FFFFFF	14.58	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D6C

Deuteranopia (green-blind)

#002569

Tritanopia (blue-blind)

#003341

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #171f6a;
/* rgb */ color: rgb(23, 31, 106);
/* oklch */ color: oklch(29.1% 0.129 270.9);

Tailwind

colors: {
  custom: {
    50: '#635a95',
    500: '#171f6a',
    950: '#000000',
  },
}

SCSS

$custom: #171f6a;
$custom-light: #635a95;
$custom-dark: #000000;

JSON

{
  "hex": "#171f6a",
  "rgb": {
    "r": 23,
    "g": 31,
    "b": 106
  },
  "hsl": {
    "h": 234.217,
    "s": 64.341,
    "l": 25.294
  },
  "oklch": {
    "l": 0.29056,
    "c": 0.12898,
    "h": 270.9
  },
  "luminance": 0.02203
}

Semantic roles & 50–950 ramp

primary

#171F6A

secondary

#A0973D

accent

#D740E7

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040D

muted

#7A797E

Preview Lab

Preview with #171F6A

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

Preview Lab → · Contrast checker → · Palette generator →