#172BA0#172BA0

#172BA0 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 37.0% C 0.187 H 267.2°. Best body text is #FFFFFF at 11.11:1 contrast (WCAG AA passes).

Color values

HEX	#172BA0
RGB	rgb(23, 43, 160)
HSL	hsl(231, 75%, 36%)
HSV	hsv(231, 86%, 63%)
CMYK	cmyk(85.6%, 73.1%, 0%, 37.3%)
CIE-LAB	lab(25.10, 37.89, -64.44)
CIE-LCH	lch(25.10, 74.76, 300.45°)
OKLab	oklab(36.97% -0.0092 -0.1868)
OKLCH	oklch(36.97% 0.187 267.2)
XYZ	xyz(7.5602, 4.4470, 33.7108)
Luminance	0.0445 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172BA0 #A08C17

analogous

#176FA0 #172BA0 #4717A0

triadic

#172BA0 #A0172B #2BA017

tetradic

#172BA0 #A0176F #A08C17 #17A047

square

#172BA0 #A0176F #A08C17 #17A047

split-complementary

#172BA0 #A04717 #6FA017

monochromatic

#080E35 #0F1D6A #172BA0 #1F39D6 #4C62E5

Accessibility & contrast

On white

11.11

#172BA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#172BA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172BA0

11.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172BA0	#FFFFFF	#000000	##FFFFFF
##172BA0	1.00	11.11	1.89	11.11
#FFFFFF	11.11	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042A3

Deuteranopia (green-blind)

#00359E

Tritanopia (blue-blind)

#004D63

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #172ba0;
/* rgb */ color: rgb(23, 43, 160);
/* oklch */ color: oklch(37.0% 0.187 267.2);

Tailwind

colors: {
  custom: {
    50: '#7165bd',
    500: '#172ba0',
    950: '#000000',
  },
}

SCSS

$custom: #172ba0;
$custom-light: #7165bd;
$custom-dark: #000000;

JSON

{
  "hex": "#172ba0",
  "rgb": {
    "r": 23,
    "g": 43,
    "b": 160
  },
  "hsl": {
    "h": 231.241,
    "s": 74.863,
    "l": 35.882
  },
  "oklch": {
    "l": 0.36972,
    "c": 0.18705,
    "h": 267.2
  },
  "luminance": 0.04448
}

Semantic roles & 50–950 ramp

primary

#172BA0

secondary

#C7B54C

accent

#D636F1

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#090512

muted

#7B7A81

Preview Lab

Preview with #172BA0

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

Preview Lab → · Contrast checker → · Palette generator →