#172783#172783

#172783 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.2% C 0.154 H 268.2°. Best body text is #FFFFFF at 12.69:1 contrast (WCAG AA passes).

Color values

HEX	#172783
RGB	rgb(23, 39, 131)
HSL	hsl(231, 70%, 30%)
HSV	hsv(231, 82%, 51%)
CMYK	cmyk(82.4%, 70.2%, 0%, 48.6%)
CIE-LAB	lab(21.10, 29.59, -53.09)
CIE-LCH	lch(21.10, 60.78, 299.13°)
OKLab	oklab(33.17% -0.0048 -0.1538)
OKLCH	oklch(33.17% 0.154 268.2)
XYZ	xyz(5.1742, 3.2713, 21.8270)
Luminance	0.0327 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172783 #837317

analogous

#175D83 #172783 #3D1783

triadic

#172783 #831727 #278317

tetradic

#172783 #83175D #837317 #17833D

square

#172783 #83175D #837317 #17833D

split-complementary

#172783 #833D17 #5D8317

monochromatic

#05081B #0E184F #172783 #2036B7 #3851DC

Accessibility & contrast

On white

12.69

#172783 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#172783 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172783

12.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172783	#FFFFFF	#000000	##FFFFFF
##172783	1.00	12.69	1.65	12.69
#FFFFFF	12.69	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003886

Deuteranopia (green-blind)

#002E81

Tritanopia (blue-blind)

#004051

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #172783;
/* rgb */ color: rgb(23, 39, 131);
/* oklch */ color: oklch(33.2% 0.154 268.2);

Tailwind

colors: {
  custom: {
    50: '#6961a8',
    500: '#172783',
    950: '#000000',
  },
}

SCSS

$custom: #172783;
$custom-light: #6961a8;
$custom-dark: #000000;

JSON

{
  "hex": "#172783",
  "rgb": {
    "r": 23,
    "g": 39,
    "b": 131
  },
  "hsl": {
    "h": 231.111,
    "s": 70.13,
    "l": 30.196
  },
  "oklch": {
    "l": 0.33167,
    "c": 0.15383,
    "h": 268.2
  },
  "luminance": 0.03272
}

Semantic roles & 50–950 ramp

primary

#172783

secondary

#B7A53F

accent

#D33BED

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#070510

muted

#7A797F

Preview Lab

Preview with #172783

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

Preview Lab → · Contrast checker → · Palette generator →