#171F6B#171F6B

#171F6B is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.2% C 0.130 H 270.8°. Best body text is #FFFFFF at 14.53:1 contrast (WCAG AA passes).

Color values

HEX	#171F6B
RGB	rgb(23, 31, 107)
HSL	hsl(234, 65%, 25%)
HSV	hsv(234, 79%, 42%)
CMYK	cmyk(78.5%, 71%, 0%, 58%)
CIE-LAB	lab(16.62, 25.69, -45.07)
CIE-LCH	lch(16.62, 51.88, 299.69°)
OKLab	oklab(29.16% 0.0019 -0.1304)
OKLCH	oklch(29.16% 0.13 270.8)
XYZ	xyz(3.4963, 2.2233, 14.1519)
Luminance	0.0222 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171F6B #6B6317

analogous

#17496B #171F6B #39176B

triadic

#171F6B #6B171F #1F6B17

tetradic

#171F6B #6B1749 #6B6317 #176B39

square

#171F6B #6B1749 #6B6317 #176B39

split-complementary

#171F6B #6B3917 #496B17

monochromatic

#050719 #0C1039 #171F6B #222E9D #2D3CD0

Accessibility & contrast

On white

14.53

#171F6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#171F6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171F6B

14.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171F6B	#FFFFFF	#000000	##FFFFFF
##171F6B	1.00	14.53	1.44	14.53
#FFFFFF	14.53	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D6D

Deuteranopia (green-blind)

#00256A

Tritanopia (blue-blind)

#003442

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #171f6b;
/* rgb */ color: rgb(23, 31, 107);
/* oklch */ color: oklch(29.2% 0.130 270.8);

Tailwind

colors: {
  custom: {
    50: '#635a96',
    500: '#171f6b',
    950: '#000000',
  },
}

SCSS

$custom: #171f6b;
$custom-light: #635a96;
$custom-dark: #000000;

JSON

{
  "hex": "#171f6b",
  "rgb": {
    "r": 23,
    "g": 31,
    "b": 107
  },
  "hsl": {
    "h": 234.286,
    "s": 64.615,
    "l": 25.49
  },
  "oklch": {
    "l": 0.29162,
    "c": 0.1304,
    "h": 270.8
  },
  "luminance": 0.02224
}

Semantic roles & 50–950 ramp

primary

#171F6B

secondary

#A1983D

accent

#D840E8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040D

muted

#7A797E

Preview Lab

Preview with #171F6B

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

Preview Lab → · Contrast checker → · Palette generator →