#172EA0#172EA0

#172EA0 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.5% C 0.184 H 266.8°. Best body text is #FFFFFF at 10.85:1 contrast (WCAG AA passes).

Color values

HEX	#172EA0
RGB	rgb(23, 46, 160)
HSL	hsl(230, 75%, 36%)
HSV	hsv(230, 86%, 63%)
CMYK	cmyk(85.6%, 71.2%, 0%, 37.3%)
CIE-LAB	lab(25.78, 36.00, -63.31)
CIE-LCH	lch(25.78, 72.83, 299.62°)
OKLab	oklab(37.47% -0.0102 -0.1835)
OKLCH	oklch(37.47% 0.184 266.8)
XYZ	xyz(7.6733, 4.6733, 33.7485)
Luminance	0.0467 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172EA0 #A08917

analogous

#1772A0 #172EA0 #4417A0

triadic

#172EA0 #A0172E #2EA017

tetradic

#172EA0 #A01772 #A08917 #17A044

square

#172EA0 #A01772 #A08917 #17A044

split-complementary

#172EA0 #A04417 #72A017

monochromatic

#080F35 #0F1F6A #172EA0 #1F3DD6 #4C66E5

Accessibility & contrast

On white

10.85

#172EA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#172EA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172EA0

10.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172EA0	#FFFFFF	#000000	##FFFFFF
##172EA0	1.00	10.85	1.93	10.85
#FFFFFF	10.85	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044A3

Deuteranopia (green-blind)

#00369E

Tritanopia (blue-blind)

#004E63

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #172ea0;
/* rgb */ color: rgb(23, 46, 160);
/* oklch */ color: oklch(37.5% 0.184 266.8);

Tailwind

colors: {
  custom: {
    50: '#7167bd',
    500: '#172ea0',
    950: '#000000',
  },
}

SCSS

$custom: #172ea0;
$custom-light: #7167bd;
$custom-dark: #000000;

JSON

{
  "hex": "#172ea0",
  "rgb": {
    "r": 23,
    "g": 46,
    "b": 160
  },
  "hsl": {
    "h": 229.927,
    "s": 74.863,
    "l": 35.882
  },
  "oklch": {
    "l": 0.37466,
    "c": 0.18382,
    "h": 266.8
  },
  "luminance": 0.04674
}

Semantic roles & 50–950 ramp

primary

#172EA0

secondary

#C7B24C

accent

#D236F1

background

#F7F6FB

surface

#EDEBF7

border

#C8C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #172EA0

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

Preview Lab → · Contrast checker → · Palette generator →