#172AA0#172AA0

#172AA0 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.8% C 0.188 H 267.3°. Best body text is #FFFFFF at 11.20:1 contrast (WCAG AA passes).

Color values

HEX	#172AA0
RGB	rgb(23, 42, 160)
HSL	hsl(232, 75%, 36%)
HSV	hsv(232, 86%, 63%)
CMYK	cmyk(85.6%, 73.8%, 0%, 37.3%)
CIE-LAB	lab(24.88, 38.51, -64.81)
CIE-LCH	lch(24.88, 75.39, 300.72°)
OKLab	oklab(36.81% -0.0088 -0.1879)
OKLCH	oklch(36.81% 0.188 267.3)
XYZ	xyz(7.5243, 4.3752, 33.6988)
Luminance	0.0438 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172AA0 #A08D17

analogous

#176EA0 #172AA0 #4817A0

triadic

#172AA0 #A0172A #2AA017

tetradic

#172AA0 #A0176E #A08D17 #17A048

square

#172AA0 #A0176E #A08D17 #17A048

split-complementary

#172AA0 #A04817 #6EA017

monochromatic

#080E35 #0F1C6A #172AA0 #1F38D6 #4C61E5

Accessibility & contrast

On white

11.20

#172AA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#172AA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172AA0

11.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172AA0	#FFFFFF	#000000	##FFFFFF
##172AA0	1.00	11.20	1.88	11.20
#FFFFFF	11.20	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042A3

Deuteranopia (green-blind)

#00349E

Tritanopia (blue-blind)

#004C62

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #172aa0;
/* rgb */ color: rgb(23, 42, 160);
/* oklch */ color: oklch(36.8% 0.188 267.3);

Tailwind

colors: {
  custom: {
    50: '#7164bd',
    500: '#172aa0',
    950: '#000000',
  },
}

SCSS

$custom: #172aa0;
$custom-light: #7164bd;
$custom-dark: #000000;

JSON

{
  "hex": "#172aa0",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 160
  },
  "hsl": {
    "h": 231.679,
    "s": 74.863,
    "l": 35.882
  },
  "oklch": {
    "l": 0.36812,
    "c": 0.1881,
    "h": 267.3
  },
  "luminance": 0.04376
}

Semantic roles & 50–950 ramp

primary

#172AA0

secondary

#C7B64C

accent

#D836F1

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#090512

muted

#7B7A81

Preview Lab

Preview with #172AA0

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

Preview Lab → · Contrast checker → · Palette generator →