#171F6E#171F6E

#171F6E is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.5% C 0.135 H 270.7°. Best body text is #FFFFFF at 14.41:1 contrast (WCAG AA passes).

Color values

HEX	#171F6E
RGB	rgb(23, 31, 110)
HSL	hsl(234, 65%, 26%)
HSV	hsv(234, 79%, 43%)
CMYK	cmyk(79.1%, 71.8%, 0%, 56.9%)
CIE-LAB	lab(16.93, 26.86, -46.51)
CIE-LCH	lch(16.93, 53.71, 300.00°)
OKLab	oklab(29.48% 0.0015 -0.1346)
OKLCH	oklch(29.48% 0.135 270.7)
XYZ	xyz(3.6568, 2.2875, 14.9976)
Luminance	0.0229 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171F6E #6E6617

analogous

#174A6E #171F6E #3A176E

triadic

#171F6E #6E171F #1F6E17

tetradic

#171F6E #6E174A #6E6617 #176E3A

square

#171F6E #6E174A #6E6617 #176E3A

split-complementary

#171F6E #6E3A17 #4A6E17

monochromatic

#050719 #0C113B #171F6E #222DA1 #2C3CD3

Accessibility & contrast

On white

14.41

#171F6E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#171F6E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171F6E

14.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171F6E	#FFFFFF	#000000	##FFFFFF
##171F6E	1.00	14.41	1.46	14.41
#FFFFFF	14.41	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E70

Deuteranopia (green-blind)

#00266D

Tritanopia (blue-blind)

#003543

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #171f6e;
/* rgb */ color: rgb(23, 31, 110);
/* oklch */ color: oklch(29.5% 0.135 270.7);

Tailwind

colors: {
  custom: {
    50: '#645b98',
    500: '#171f6e',
    950: '#000000',
  },
}

SCSS

$custom: #171f6e;
$custom-light: #645b98;
$custom-dark: #000000;

JSON

{
  "hex": "#171f6e",
  "rgb": {
    "r": 23,
    "g": 31,
    "b": 110
  },
  "hsl": {
    "h": 234.483,
    "s": 65.414,
    "l": 26.078
  },
  "oklch": {
    "l": 0.29482,
    "c": 0.13461,
    "h": 270.7
  },
  "luminance": 0.02288
}

Semantic roles & 50–950 ramp

primary

#171F6E

secondary

#A49A3D

accent

#D93FE8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040E

muted

#7A797E

Preview Lab

Preview with #171F6E

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

Preview Lab → · Contrast checker → · Palette generator →