#172781#172781

#172781 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.0% C 0.151 H 268.2°. Best body text is #FFFFFF at 12.78:1 contrast (WCAG AA passes).

Color values

HEX	#172781
RGB	rgb(23, 39, 129)
HSL	hsl(231, 70%, 30%)
HSV	hsv(231, 82%, 51%)
CMYK	cmyk(82.2%, 69.8%, 0%, 49.4%)
CIE-LAB	lab(20.90, 28.81, -52.16)
CIE-LCH	lch(20.90, 59.59, 298.92°)
OKLab	oklab(32.96% -0.0046 -0.1511)
OKLCH	oklch(32.96% 0.151 268.2)
XYZ	xyz(5.0399, 3.2176, 21.1201)
Luminance	0.0322 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172781 #817117

analogous

#175C81 #172781 #3C1781

triadic

#172781 #811727 #278117

tetradic

#172781 #81175C #817117 #17813C

square

#172781 #81175C #817117 #17813C

split-complementary

#172781 #813C17 #5C8117

monochromatic

#05081A #0E174D #172781 #2037B5 #3750DB

Accessibility & contrast

On white

12.78

#172781 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#172781 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172781

12.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172781	#FFFFFF	#000000	##FFFFFF
##172781	1.00	12.78	1.64	12.78
#FFFFFF	12.78	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003784

Deuteranopia (green-blind)

#002D7F

Tritanopia (blue-blind)

#004050

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #172781;
/* rgb */ color: rgb(23, 39, 129);
/* oklch */ color: oklch(33.0% 0.151 268.2);

Tailwind

colors: {
  custom: {
    50: '#6861a7',
    500: '#172781',
    950: '#000000',
  },
}

SCSS

$custom: #172781;
$custom-light: #6861a7;
$custom-dark: #000000;

JSON

{
  "hex": "#172781",
  "rgb": {
    "r": 23,
    "g": 39,
    "b": 129
  },
  "hsl": {
    "h": 230.943,
    "s": 69.737,
    "l": 29.804
  },
  "oklch": {
    "l": 0.32957,
    "c": 0.15113,
    "h": 268.2
  },
  "luminance": 0.03218
}

Semantic roles & 50–950 ramp

primary

#172781

secondary

#B5A33E

accent

#D23BED

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #172781

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

Preview Lab → · Contrast checker → · Palette generator →