#171D6B#171D6B

#171D6B is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.8% C 0.133 H 271.3°. Best body text is #FFFFFF at 14.74:1 contrast (WCAG AA passes).

Color values

HEX	#171D6B
RGB	rgb(23, 29, 107)
HSL	hsl(236, 65%, 25%)
HSV	hsv(236, 79%, 42%)
CMYK	cmyk(78.5%, 72.9%, 0%, 58%)
CIE-LAB	lab(16.12, 27.05, -45.90)
CIE-LCH	lch(16.12, 53.28, 300.52°)
OKLab	oklab(28.8% 0.0031 -0.1328)
OKLCH	oklch(28.8% 0.133 271.3)
XYZ	xyz(3.4457, 2.1221, 14.1351)
Luminance	0.0212 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171D6B #6B6517

analogous

#17476B #171D6B #3B176B

triadic

#171D6B #6B171D #1D6B17

tetradic

#171D6B #6B1747 #6B6517 #176B3B

square

#171D6B #6B1747 #6B6517 #176B3B

split-complementary

#171D6B #6B3B17 #476B17

monochromatic

#050719 #0C0F39 #171D6B #222B9D #2D38D0

Accessibility & contrast

On white

14.74

#171D6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#171D6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171D6B

14.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171D6B	#FFFFFF	#000000	##FFFFFF
##171D6B	1.00	14.74	1.42	14.74
#FFFFFF	14.74	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C6D

Deuteranopia (green-blind)

#00246A

Tritanopia (blue-blind)

#003241

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #171d6b;
/* rgb */ color: rgb(23, 29, 107);
/* oklch */ color: oklch(28.8% 0.133 271.3);

Tailwind

colors: {
  custom: {
    50: '#635996',
    500: '#171d6b',
    950: '#000000',
  },
}

SCSS

$custom: #171d6b;
$custom-light: #635996;
$custom-dark: #000000;

JSON

{
  "hex": "#171d6b",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 107
  },
  "hsl": {
    "h": 235.714,
    "s": 64.615,
    "l": 25.49
  },
  "oklch": {
    "l": 0.28798,
    "c": 0.13285,
    "h": 271.3
  },
  "luminance": 0.02122
}

Semantic roles & 50–950 ramp

primary

#171D6B

secondary

#A19A3D

accent

#DC40E8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030D

muted

#7A787E

Preview Lab

Preview with #171D6B

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

Preview Lab → · Contrast checker → · Palette generator →