#172F86#172F86

#172F86 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.0% C 0.148 H 266.4°. Best body text is #FFFFFF at 11.75:1 contrast (WCAG AA passes).

Color values

HEX	#172F86
RGB	rgb(23, 47, 134)
HSL	hsl(227, 71%, 31%)
HSV	hsv(227, 83%, 53%)
CMYK	cmyk(82.8%, 64.9%, 0%, 47.5%)
CIE-LAB	lab(23.46, 25.31, -51.10)
CIE-LCH	lch(23.46, 57.02, 296.35°)
OKLab	oklab(34.99% -0.0093 -0.1479)
OKLCH	oklch(34.99% 0.148 266.4)
XYZ	xyz(5.6714, 3.9357, 23.0104)
Luminance	0.0394 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172F86 #866E17

analogous

#176686 #172F86 #361786

triadic

#172F86 #86172F #2F8617

tetradic

#172F86 #861766 #866E17 #178636

square

#172F86 #861766 #866E17 #178636

split-complementary

#172F86 #863617 #668617

monochromatic

#050A1E #0E1D52 #172F86 #2041BA #3A5DDD

Accessibility & contrast

On white

11.75

#172F86 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#172F86 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172F86

11.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172F86	#FFFFFF	#000000	##FFFFFF
##172F86	1.00	11.75	1.79	11.75
#FFFFFF	11.75	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D89

Deuteranopia (green-blind)

#003384

Tritanopia (blue-blind)

#004656

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #172f86;
/* rgb */ color: rgb(23, 47, 134);
/* oklch */ color: oklch(35.0% 0.148 266.4);

Tailwind

colors: {
  custom: {
    50: '#6967aa',
    500: '#172f86',
    950: '#000000',
  },
}

SCSS

$custom: #172f86;
$custom-light: #6967aa;
$custom-dark: #000000;

JSON

{
  "hex": "#172f86",
  "rgb": {
    "r": 23,
    "g": 47,
    "b": 134
  },
  "hsl": {
    "h": 227.027,
    "s": 70.701,
    "l": 30.784
  },
  "oklch": {
    "l": 0.34987,
    "c": 0.14818,
    "h": 266.4
  },
  "luminance": 0.03936
}

Semantic roles & 50–950 ramp

primary

#172F86

secondary

#BA9F3F

accent

#C73AED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070610

muted

#7A7A7F

Preview Lab

Preview with #172F86

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

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