#172581#172581

#172581 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.6% C 0.153 H 268.6°. Best body text is #FFFFFF at 12.98:1 contrast (WCAG AA passes).

Color values

HEX	#172581
RGB	rgb(23, 37, 129)
HSL	hsl(232, 70%, 30%)
HSV	hsv(232, 82%, 51%)
CMYK	cmyk(82.2%, 71.3%, 0%, 49.4%)
CIE-LAB	lab(20.40, 30.15, -52.98)
CIE-LCH	lch(20.40, 60.96, 299.65°)
OKLab	oklab(32.6% -0.0036 -0.1534)
OKLCH	oklch(32.6% 0.153 268.6)
XYZ	xyz(4.9760, 3.0897, 21.0987)
Luminance	0.0309 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172581 #817317

analogous

#175A81 #172581 #3E1781

triadic

#172581 #811725 #258117

tetradic

#172581 #81175A #817317 #17813E

square

#172581 #81175A #817317 #17813E

split-complementary

#172581 #813E17 #5A8117

monochromatic

#05071A #0E164D #172581 #2034B5 #374DDB

Accessibility & contrast

On white

12.98

#172581 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#172581 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172581

12.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172581	#FFFFFF	#000000	##FFFFFF
##172581	1.00	12.98	1.62	12.98
#FFFFFF	12.98	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003684

Deuteranopia (green-blind)

#002C7F

Tritanopia (blue-blind)

#003F50

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #172581;
/* rgb */ color: rgb(23, 37, 129);
/* oklch */ color: oklch(32.6% 0.153 268.6);

Tailwind

colors: {
  custom: {
    50: '#6960a7',
    500: '#172581',
    950: '#000000',
  },
}

SCSS

$custom: #172581;
$custom-light: #6960a7;
$custom-dark: #000000;

JSON

{
  "hex": "#172581",
  "rgb": {
    "r": 23,
    "g": 37,
    "b": 129
  },
  "hsl": {
    "h": 232.075,
    "s": 69.737,
    "l": 29.804
  },
  "oklch": {
    "l": 0.32597,
    "c": 0.15349,
    "h": 268.6
  },
  "luminance": 0.0309
}

Semantic roles & 50–950 ramp

primary

#172581

secondary

#B5A63E

accent

#D53BED

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #172581

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

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