#172FA0#172FA0

#172FA0 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.6% C 0.183 H 266.7°. Best body text is #FFFFFF at 10.77:1 contrast (WCAG AA passes).

Color values

HEX	#172FA0
RGB	rgb(23, 47, 160)
HSL	hsl(229, 75%, 36%)
HSV	hsv(229, 86%, 63%)
CMYK	cmyk(85.6%, 70.6%, 0%, 37.3%)
CIE-LAB	lab(26.02, 35.36, -62.93)
CIE-LCH	lch(26.02, 72.18, 299.33°)
OKLab	oklab(37.64% -0.0105 -0.1824)
OKLCH	oklch(37.64% 0.183 266.7)
XYZ	xyz(7.7128, 4.7523, 33.7617)
Luminance	0.0475 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172FA0 #A08817

analogous

#1773A0 #172FA0 #4317A0

triadic

#172FA0 #A0172F #2FA017

tetradic

#172FA0 #A01773 #A08817 #17A043

square

#172FA0 #A01773 #A08817 #17A043

split-complementary

#172FA0 #A04317 #73A017

monochromatic

#081035 #0F1F6A #172FA0 #1F3FD6 #4C67E5

Accessibility & contrast

On white

10.77

#172FA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#172FA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172FA0

10.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172FA0	#FFFFFF	#000000	##FFFFFF
##172FA0	1.00	10.77	1.95	10.77
#FFFFFF	10.77	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044A3

Deuteranopia (green-blind)

#00379E

Tritanopia (blue-blind)

#004F64

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #172fa0;
/* rgb */ color: rgb(23, 47, 160);
/* oklch */ color: oklch(37.6% 0.183 266.7);

Tailwind

colors: {
  custom: {
    50: '#7068bd',
    500: '#172fa0',
    950: '#000000',
  },
}

SCSS

$custom: #172fa0;
$custom-light: #7068bd;
$custom-dark: #000000;

JSON

{
  "hex": "#172fa0",
  "rgb": {
    "r": 23,
    "g": 47,
    "b": 160
  },
  "hsl": {
    "h": 229.489,
    "s": 74.863,
    "l": 35.882
  },
  "oklch": {
    "l": 0.37636,
    "c": 0.18272,
    "h": 266.7
  },
  "luminance": 0.04753
}

Semantic roles & 50–950 ramp

primary

#172FA0

secondary

#C7B14C

accent

#D136F1

background

#F7F6FB

surface

#EDEBF7

border

#C8C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #172FA0

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

Preview Lab → · Contrast checker → · Palette generator →