#172A7C#172A7C

#172A7C is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.0% C 0.141 H 267.5°. Best body text is #FFFFFF at 12.66:1 contrast (WCAG AA passes).

Color values

HEX	#172A7C
RGB	rgb(23, 42, 124)
HSL	hsl(229, 69%, 29%)
HSV	hsv(229, 81%, 49%)
CMYK	cmyk(81.5%, 66.1%, 0%, 51.4%)
CIE-LAB	lab(21.18, 24.79, -48.53)
CIE-LCH	lch(21.18, 54.49, 297.06°)
OKLab	oklab(33.02% -0.0061 -0.1404)
OKLCH	oklch(33.02% 0.141 267.5)
XYZ	xyz(4.8181, 3.2928, 19.4465)
Luminance	0.0329 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172A7C #7C6917

analogous

#175D7C #172A7C #37177C

triadic

#172A7C #7C172A #2A7C17

tetradic

#172A7C #7C175D #7C6917 #177C37

square

#172A7C #7C175D #7C6917 #177C37

split-complementary

#172A7C #7C3717 #5D7C17

monochromatic

#05091A #0D1948 #172A7C #213BB0 #3453D9

Accessibility & contrast

On white

12.66

#172A7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#172A7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172A7C

12.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172A7C	#FFFFFF	#000000	##FFFFFF
##172A7C	1.00	12.66	1.66	12.66
#FFFFFF	12.66	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00387F

Deuteranopia (green-blind)

#002E7A

Tritanopia (blue-blind)

#00404F

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #172a7c;
/* rgb */ color: rgb(23, 42, 124);
/* oklch */ color: oklch(33.0% 0.141 267.5);

Tailwind

colors: {
  custom: {
    50: '#6763a3',
    500: '#172a7c',
    950: '#000000',
  },
}

SCSS

$custom: #172a7c;
$custom-light: #6763a3;
$custom-dark: #000000;

JSON

{
  "hex": "#172a7c",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 124
  },
  "hsl": {
    "h": 228.713,
    "s": 68.707,
    "l": 28.824
  },
  "oklch": {
    "l": 0.33016,
    "c": 0.14055,
    "h": 267.5
  },
  "luminance": 0.03293
}

Semantic roles & 50–950 ramp

primary

#172A7C

secondary

#B19B3E

accent

#CB3CEC

background

#F6F5FA

surface

#EBEAF4

border

#C6C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #172A7C

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

Preview Lab → · Contrast checker → · Palette generator →