#172EA1#172EA1

#172EA1 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.6% C 0.185 H 266.8°. Best body text is #FFFFFF at 10.81:1 contrast (WCAG AA passes).

Color values

HEX	#172EA1
RGB	rgb(23, 46, 161)
HSL	hsl(230, 75%, 36%)
HSV	hsv(230, 86%, 63%)
CMYK	cmyk(85.7%, 71.4%, 0%, 36.9%)
CIE-LAB	lab(25.89, 36.37, -63.75)
CIE-LCH	lch(25.89, 73.39, 299.71°)
OKLab	oklab(37.57% -0.0103 -0.1848)
OKLCH	oklch(37.57% 0.185 266.8)
XYZ	xyz(7.7611, 4.7084, 34.2111)
Luminance	0.0471 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172EA1 #A18A17

analogous

#1773A1 #172EA1 #4517A1

triadic

#172EA1 #A1172E #2EA117

tetradic

#172EA1 #A11773 #A18A17 #17A145

square

#172EA1 #A11773 #A18A17 #17A145

split-complementary

#172EA1 #A14517 #73A117

monochromatic

#080F36 #0F1F6B #172EA1 #1F3DD7 #4D66E6

Accessibility & contrast

On white

10.81

#172EA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#172EA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172EA1

10.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172EA1	#FFFFFF	#000000	##FFFFFF
##172EA1	1.00	10.81	1.94	10.81
#FFFFFF	10.81	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044A4

Deuteranopia (green-blind)

#00379F

Tritanopia (blue-blind)

#004F64

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #172ea1;
/* rgb */ color: rgb(23, 46, 161);
/* oklch */ color: oklch(37.6% 0.185 266.8);

Tailwind

colors: {
  custom: {
    50: '#7167be',
    500: '#172ea1',
    950: '#000000',
  },
}

SCSS

$custom: #172ea1;
$custom-light: #7167be;
$custom-dark: #000000;

JSON

{
  "hex": "#172ea1",
  "rgb": {
    "r": 23,
    "g": 46,
    "b": 161
  },
  "hsl": {
    "h": 230,
    "s": 75,
    "l": 36.078
  },
  "oklch": {
    "l": 0.37573,
    "c": 0.1851,
    "h": 266.8
  },
  "luminance": 0.04709
}

Semantic roles & 50–950 ramp

primary

#172EA1

secondary

#C7B34C

accent

#D236F2

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #172EA1

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

Preview Lab → · Contrast checker → · Palette generator →