#171D6C#171D6C

#171D6C is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.9% C 0.134 H 271.3°. Best body text is #FFFFFF at 14.70:1 contrast (WCAG AA passes).

Color values

HEX	#171D6C
RGB	rgb(23, 29, 108)
HSL	hsl(236, 65%, 26%)
HSV	hsv(236, 79%, 42%)
CMYK	cmyk(78.7%, 73.1%, 0%, 57.6%)
CIE-LAB	lab(16.22, 27.44, -46.38)
CIE-LCH	lch(16.22, 53.88, 300.61°)
OKLab	oklab(28.91% 0.003 -0.1342)
OKLCH	oklch(28.91% 0.134 271.3)
XYZ	xyz(3.4986, 2.1432, 14.4138)
Luminance	0.0214 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171D6C #6C6617

analogous

#17476C #171D6C #3B176C

triadic

#171D6C #6C171D #1D6C17

tetradic

#171D6C #6C1747 #6C6617 #176C3B

square

#171D6C #6C1747 #6C6617 #176C3B

split-complementary

#171D6C #6C3B17 #476C17

monochromatic

#050719 #0C0F3A #171D6C #222B9E #2C38D1

Accessibility & contrast

On white

14.70

#171D6C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#171D6C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171D6C

14.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171D6C	#FFFFFF	#000000	##FFFFFF
##171D6C	1.00	14.70	1.43	14.70
#FFFFFF	14.70	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C6E

Deuteranopia (green-blind)

#00246B

Tritanopia (blue-blind)

#003342

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #171d6c;
/* rgb */ color: rgb(23, 29, 108);
/* oklch */ color: oklch(28.9% 0.134 271.3);

Tailwind

colors: {
  custom: {
    50: '#645997',
    500: '#171d6c',
    950: '#000000',
  },
}

SCSS

$custom: #171d6c;
$custom-light: #645997;
$custom-dark: #000000;

JSON

{
  "hex": "#171d6c",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 108
  },
  "hsl": {
    "h": 235.765,
    "s": 64.885,
    "l": 25.686
  },
  "oklch": {
    "l": 0.28907,
    "c": 0.13423,
    "h": 271.3
  },
  "luminance": 0.02144
}

Semantic roles & 50–950 ramp

primary

#171D6C

secondary

#A29B3D

accent

#DC40E8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030E

muted

#7A787E

Preview Lab

Preview with #171D6C

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

Preview Lab → · Contrast checker → · Palette generator →