#171F84#171F84

#171F84 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.9% C 0.164 H 269.5°. Best body text is #FFFFFF at 13.41:1 contrast (WCAG AA passes).

Color values

HEX	#171F84
RGB	rgb(23, 31, 132)
HSL	hsl(236, 70%, 30%)
HSV	hsv(236, 83%, 52%)
CMYK	cmyk(82.6%, 76.5%, 0%, 48.2%)
CIE-LAB	lab(19.34, 35.11, -56.62)
CIE-LCH	lch(19.34, 66.62, 301.80°)
OKLab	oklab(31.93% -0.0014 -0.164)
OKLCH	oklch(31.93% 0.164 269.5)
XYZ	xyz(5.0068, 2.8275, 22.1072)
Luminance	0.0283 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171F84 #847C17

analogous

#175684 #171F84 #451784

triadic

#171F84 #84171F #1F8417

tetradic

#171F84 #841756 #847C17 #178445

square

#171F84 #841756 #847C17 #178445

split-complementary

#171F84 #844517 #568417

monochromatic

#05071C #0E1350 #171F84 #202BB8 #3945DC

Accessibility & contrast

On white

13.41

#171F84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#171F84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171F84

13.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171F84	#FFFFFF	#000000	##FFFFFF
##171F84	1.00	13.41	1.57	13.41
#FFFFFF	13.41	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003487

Deuteranopia (green-blind)

#002982

Tritanopia (blue-blind)

#003D50

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #171f84;
/* rgb */ color: rgb(23, 31, 132);
/* oklch */ color: oklch(31.9% 0.164 269.5);

Tailwind

colors: {
  custom: {
    50: '#6a5ca9',
    500: '#171f84',
    950: '#000000',
  },
}

SCSS

$custom: #171f84;
$custom-light: #6a5ca9;
$custom-dark: #000000;

JSON

{
  "hex": "#171f84",
  "rgb": {
    "r": 23,
    "g": 31,
    "b": 132
  },
  "hsl": {
    "h": 235.596,
    "s": 70.323,
    "l": 30.392
  },
  "oklch": {
    "l": 0.31933,
    "c": 0.16404,
    "h": 269.5
  },
  "luminance": 0.02828
}

Semantic roles & 50–950 ramp

primary

#171F84

secondary

#B8AF3F

accent

#E03BED

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#080410

muted

#7A797F

Preview Lab

Preview with #171F84

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

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