#171D84#171D84

#171D84 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.6% C 0.166 H 269.7°. Best body text is #FFFFFF at 13.59:1 contrast (WCAG AA passes).

Color values

HEX	#171D84
RGB	rgb(23, 29, 132)
HSL	hsl(237, 70%, 30%)
HSV	hsv(237, 83%, 52%)
CMYK	cmyk(82.6%, 78%, 0%, 48.2%)
CIE-LAB	lab(18.91, 36.31, -57.33)
CIE-LCH	lch(18.91, 67.86, 302.35°)
OKLab	oklab(31.63% -0.0007 -0.1661)
OKLCH	oklch(31.63% 0.166 269.7)
XYZ	xyz(4.9561, 2.7263, 22.0903)
Luminance	0.0273 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171D84 #847E17

analogous

#175484 #171D84 #471784

triadic

#171D84 #84171D #1D8417

tetradic

#171D84 #841754 #847E17 #178447

square

#171D84 #841754 #847E17 #178447

split-complementary

#171D84 #844717 #548417

monochromatic

#05061C #0E1250 #171D84 #2028B8 #3942DC

Accessibility & contrast

On white

13.59

#171D84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#171D84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171D84

13.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171D84	#FFFFFF	#000000	##FFFFFF
##171D84	1.00	13.59	1.55	13.59
#FFFFFF	13.59	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003387

Deuteranopia (green-blind)

#002882

Tritanopia (blue-blind)

#003C4F

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #171d84;
/* rgb */ color: rgb(23, 29, 132);
/* oklch */ color: oklch(31.6% 0.166 269.7);

Tailwind

colors: {
  custom: {
    50: '#6a5aa9',
    500: '#171d84',
    950: '#000000',
  },
}

SCSS

$custom: #171d84;
$custom-light: #6a5aa9;
$custom-dark: #000000;

JSON

{
  "hex": "#171d84",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 132
  },
  "hsl": {
    "h": 236.697,
    "s": 70.323,
    "l": 30.392
  },
  "oklch": {
    "l": 0.3163,
    "c": 0.16606,
    "h": 269.7
  },
  "luminance": 0.02727
}

Semantic roles & 50–950 ramp

primary

#171D84

secondary

#B8B13F

accent

#E33BED

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #171D84

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

Preview Lab → · Contrast checker → · Palette generator →