#171F6C#171F6C

#171F6C is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.3% C 0.132 H 270.8°. Best body text is #FFFFFF at 14.49:1 contrast (WCAG AA passes).

Color values

HEX	#171F6C
RGB	rgb(23, 31, 108)
HSL	hsl(234, 65%, 26%)
HSV	hsv(234, 79%, 42%)
CMYK	cmyk(78.7%, 71.3%, 0%, 57.6%)
CIE-LAB	lab(16.72, 26.08, -45.55)
CIE-LCH	lch(16.72, 52.49, 299.79°)
OKLab	oklab(29.27% 0.0018 -0.1318)
OKLCH	oklch(29.27% 0.132 270.8)
XYZ	xyz(3.5492, 2.2445, 14.4306)
Luminance	0.0225 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171F6C #6C6417

analogous

#17496C #171F6C #39176C

triadic

#171F6C #6C171F #1F6C17

tetradic

#171F6C #6C1749 #6C6417 #176C39

square

#171F6C #6C1749 #6C6417 #176C39

split-complementary

#171F6C #6C3917 #496C17

monochromatic

#050719 #0C113A #171F6C #222D9E #2C3CD1

Accessibility & contrast

On white

14.49

#171F6C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#171F6C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171F6C

14.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171F6C	#FFFFFF	#000000	##FFFFFF
##171F6C	1.00	14.49	1.45	14.49
#FFFFFF	14.49	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D6E

Deuteranopia (green-blind)

#00256B

Tritanopia (blue-blind)

#003442

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #171f6c;
/* rgb */ color: rgb(23, 31, 108);
/* oklch */ color: oklch(29.3% 0.132 270.8);

Tailwind

colors: {
  custom: {
    50: '#635b97',
    500: '#171f6c',
    950: '#000000',
  },
}

SCSS

$custom: #171f6c;
$custom-light: #635b97;
$custom-dark: #000000;

JSON

{
  "hex": "#171f6c",
  "rgb": {
    "r": 23,
    "g": 31,
    "b": 108
  },
  "hsl": {
    "h": 234.353,
    "s": 64.885,
    "l": 25.686
  },
  "oklch": {
    "l": 0.29268,
    "c": 0.13181,
    "h": 270.8
  },
  "luminance": 0.02245
}

Semantic roles & 50–950 ramp

primary

#171F6C

secondary

#A2983D

accent

#D840E8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040D

muted

#7A797E

Preview Lab

Preview with #171F6C

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

Preview Lab → · Contrast checker → · Palette generator →