#172580#172580

#172580 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.5% C 0.152 H 268.7°. Best body text is #FFFFFF at 13.02:1 contrast (WCAG AA passes).

Color values

HEX	#172580
RGB	rgb(23, 37, 128)
HSL	hsl(232, 70%, 30%)
HSV	hsv(232, 82%, 50%)
CMYK	cmyk(82%, 71.1%, 0%, 49.8%)
CIE-LAB	lab(20.30, 29.77, -52.52)
CIE-LCH	lch(20.30, 60.37, 299.55°)
OKLab	oklab(32.49% -0.0035 -0.1521)
OKLCH	oklch(32.49% 0.152 268.7)
XYZ	xyz(4.9099, 3.0632, 20.7504)
Luminance	0.0306 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172580 #807217

analogous

#175A80 #172580 #3E1780

triadic

#172580 #801725 #258017

tetradic

#172580 #80175A #807217 #17803E

square

#172580 #80175A #807217 #17803E

split-complementary

#172580 #803E17 #5A8017

monochromatic

#05071A #0E164C #172580 #2034B4 #364CDB

Accessibility & contrast

On white

13.02

#172580 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#172580 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172580

13.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172580	#FFFFFF	#000000	##FFFFFF
##172580	1.00	13.02	1.61	13.02
#FFFFFF	13.02	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003683

Deuteranopia (green-blind)

#002C7E

Tritanopia (blue-blind)

#003E4F

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #172580;
/* rgb */ color: rgb(23, 37, 128);
/* oklch */ color: oklch(32.5% 0.152 268.7);

Tailwind

colors: {
  custom: {
    50: '#685fa6',
    500: '#172580',
    950: '#000000',
  },
}

SCSS

$custom: #172580;
$custom-light: #685fa6;
$custom-dark: #000000;

JSON

{
  "hex": "#172580",
  "rgb": {
    "r": 23,
    "g": 37,
    "b": 128
  },
  "hsl": {
    "h": 232,
    "s": 69.536,
    "l": 29.608
  },
  "oklch": {
    "l": 0.3249,
    "c": 0.15214,
    "h": 268.7
  },
  "luminance": 0.03064
}

Semantic roles & 50–950 ramp

primary

#172580

secondary

#B4A53E

accent

#D53BEC

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #172580

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

Preview Lab → · Contrast checker → · Palette generator →