#171C4A#171C4A

#171C4A is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.3% C 0.085 H 274.0°. Best body text is #FFFFFF at 16.14:1 contrast (WCAG AA passes).

Color values

HEX	#171C4A
RGB	rgb(23, 28, 74)
HSL	hsl(234, 53%, 19%)
HSV	hsv(234, 69%, 29%)
CMYK	cmyk(68.9%, 62.2%, 0%, 71%)
CIE-LAB	lab(12.65, 14.64, -29.41)
CIE-LCH	lch(12.65, 32.85, 296.46°)
OKLab	oklab(25.27% 0.0059 -0.0845)
OKLCH	oklch(25.27% 0.085 274)
XYZ	xyz(2.0042, 1.5069, 6.6625)
Luminance	0.0151 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.35

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171C4A #4A4517

analogous

#17364A #171C4A #2C174A

triadic

#171C4A #4A171C #1C4A17

tetradic

#171C4A #4A1736 #4A4517 #174A2C

square

#171C4A #4A1736 #4A4517 #174A2C

split-complementary

#171C4A #4A2C17 #364A17

monochromatic

#070917 #080A1B #171C4A #262E79 #343FA7

Accessibility & contrast

On white

16.14

#171C4A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#171C4A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171C4A

16.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171C4A	#FFFFFF	#000000	##FFFFFF
##171C4A	1.00	16.14	1.30	16.14
#FFFFFF	16.14	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00234C

Deuteranopia (green-blind)

#001F49

Tritanopia (blue-blind)

#00272F

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #171c4a;
/* rgb */ color: rgb(23, 28, 74);
/* oklch */ color: oklch(25.3% 0.085 274.0);

Tailwind

colors: {
  custom: {
    50: '#5b577d',
    500: '#171c4a',
    950: '#000000',
  },
}

SCSS

$custom: #171c4a;
$custom-light: #5b577d;
$custom-dark: #000000;

JSON

{
  "hex": "#171c4a",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 74
  },
  "hsl": {
    "h": 234.118,
    "s": 52.577,
    "l": 19.02
  },
  "oklch": {
    "l": 0.25273,
    "c": 0.08468,
    "h": 274
  },
  "luminance": 0.01507
}

Semantic roles & 50–950 ramp

primary

#171C4A

secondary

#817A3C

accent

#CE4CDC

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#040309

muted

#79787B

Preview Lab

Preview with #171C4A

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

Preview Lab → · Contrast checker → · Palette generator →