#172A79#172A79

#172A79 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.7% C 0.136 H 267.5°. Best body text is #FFFFFF at 12.78:1 contrast (WCAG AA passes).

Color values

HEX	#172A79
RGB	rgb(23, 42, 121)
HSL	hsl(228, 68%, 28%)
HSV	hsv(228, 81%, 47%)
CMYK	cmyk(81%, 65.3%, 0%, 52.5%)
CIE-LAB	lab(20.90, 23.59, -47.08)
CIE-LCH	lch(20.90, 52.66, 296.61°)
OKLab	oklab(32.72% -0.006 -0.1362)
OKLCH	oklch(32.72% 0.136 267.5)
XYZ	xyz(4.6313, 3.2180, 18.4625)
Luminance	0.0322 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172A79 #796617

analogous

#175B79 #172A79 #351779

triadic

#172A79 #79172A #2A7917

tetradic

#172A79 #79175B #796617 #177935

square

#172A79 #79175B #796617 #177935

split-complementary

#172A79 #793517 #5B7917

monochromatic

#05091A #0D1846 #172A79 #213CAC #3252D8

Accessibility & contrast

On white

12.78

#172A79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#172A79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172A79

12.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172A79	#FFFFFF	#000000	##FFFFFF
##172A79	1.00	12.78	1.64	12.78
#FFFFFF	12.78	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00377C

Deuteranopia (green-blind)

#002E78

Tritanopia (blue-blind)

#003F4D

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #172a79;
/* rgb */ color: rgb(23, 42, 121);
/* oklch */ color: oklch(32.7% 0.136 267.5);

Tailwind

colors: {
  custom: {
    50: '#6663a0',
    500: '#172a79',
    950: '#000000',
  },
}

SCSS

$custom: #172a79;
$custom-light: #6663a0;
$custom-dark: #000000;

JSON

{
  "hex": "#172a79",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 121
  },
  "hsl": {
    "h": 228.367,
    "s": 68.056,
    "l": 28.235
  },
  "oklch": {
    "l": 0.3272,
    "c": 0.13632,
    "h": 267.5
  },
  "luminance": 0.03219
}

Semantic roles & 50–950 ramp

primary

#172A79

secondary

#AE983E

accent

#C93DEB

background

#F6F5FA

surface

#EBEAF3

border

#C6C6CD

text

#07050F

muted

#7A797F

Preview Lab

Preview with #172A79

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

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