#171F6F#171F6F

#171F6F is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.6% C 0.136 H 270.6°. Best body text is #FFFFFF at 14.36:1 contrast (WCAG AA passes).

Color values

HEX	#171F6F
RGB	rgb(23, 31, 111)
HSL	hsl(235, 66%, 26%)
HSV	hsv(235, 79%, 44%)
CMYK	cmyk(79.3%, 72.1%, 0%, 56.5%)
CIE-LAB	lab(17.03, 27.25, -46.99)
CIE-LCH	lch(17.03, 54.32, 300.11°)
OKLab	oklab(29.59% 0.0014 -0.136)
OKLCH	oklch(29.59% 0.136 270.6)
XYZ	xyz(3.7116, 2.3094, 15.2860)
Luminance	0.0231 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171F6F #6F6717

analogous

#174B6F #171F6F #3B176F

triadic

#171F6F #6F171F #1F6F17

tetradic

#171F6F #6F174B #6F6717 #176F3B

square

#171F6F #6F174B #6F6717 #176F3B

split-complementary

#171F6F #6F3B17 #4B6F17

monochromatic

#050719 #0C113C #171F6F #222DA2 #2D3CD3

Accessibility & contrast

On white

14.36

#171F6F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#171F6F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171F6F

14.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171F6F	#FFFFFF	#000000	##FFFFFF
##171F6F	1.00	14.36	1.46	14.36
#FFFFFF	14.36	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E71

Deuteranopia (green-blind)

#00266E

Tritanopia (blue-blind)

#003544

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #171f6f;
/* rgb */ color: rgb(23, 31, 111);
/* oklch */ color: oklch(29.6% 0.136 270.6);

Tailwind

colors: {
  custom: {
    50: '#645b99',
    500: '#171f6f',
    950: '#000000',
  },
}

SCSS

$custom: #171f6f;
$custom-light: #645b99;
$custom-dark: #000000;

JSON

{
  "hex": "#171f6f",
  "rgb": {
    "r": 23,
    "g": 31,
    "b": 111
  },
  "hsl": {
    "h": 234.545,
    "s": 65.672,
    "l": 26.275
  },
  "oklch": {
    "l": 0.2959,
    "c": 0.13601,
    "h": 270.6
  },
  "luminance": 0.0231
}

Semantic roles & 50–950 ramp

primary

#171F6F

secondary

#A59B3D

accent

#D93FE9

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040E

muted

#7A797E

Preview Lab

Preview with #171F6F

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

Preview Lab → · Contrast checker → · Palette generator →