#172C7A#172C7A

#172C7A is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.2% C 0.135 H 266.9°. Best body text is #FFFFFF at 12.52:1 contrast (WCAG AA passes).

Color values

HEX	#172C7A
RGB	rgb(23, 44, 122)
HSL	hsl(227, 68%, 28%)
HSV	hsv(227, 81%, 48%)
CMYK	cmyk(81.1%, 63.9%, 0%, 52.2%)
CIE-LAB	lab(21.54, 22.58, -46.67)
CIE-LCH	lch(21.54, 51.85, 295.82°)
OKLab	oklab(33.22% -0.0073 -0.135)
OKLCH	oklch(33.22% 0.135 266.9)
XYZ	xyz(4.7657, 3.3881, 18.8114)
Luminance	0.0339 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C7A #7A6517

analogous

#175D7A #172C7A #33177A

triadic

#172C7A #7A172C #2C7A17

tetradic

#172C7A #7A175D #7A6517 #177A33

square

#172C7A #7A175D #7A6517 #177A33

split-complementary

#172C7A #7A3317 #5D7A17

monochromatic

#05091A #0D1947 #172C7A #213FAD #3356D9

Accessibility & contrast

On white

12.52

#172C7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#172C7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C7A

12.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C7A	#FFFFFF	#000000	##FFFFFF
##172C7A	1.00	12.52	1.68	12.52
#FFFFFF	12.52	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00387D

Deuteranopia (green-blind)

#002F79

Tritanopia (blue-blind)

#00404E

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #172c7a;
/* rgb */ color: rgb(23, 44, 122);
/* oklch */ color: oklch(33.2% 0.135 266.9);

Tailwind

colors: {
  custom: {
    50: '#6664a1',
    500: '#172c7a',
    950: '#000000',
  },
}

SCSS

$custom: #172c7a;
$custom-light: #6664a1;
$custom-dark: #000000;

JSON

{
  "hex": "#172c7a",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 122
  },
  "hsl": {
    "h": 227.273,
    "s": 68.276,
    "l": 28.431
  },
  "oklch": {
    "l": 0.33221,
    "c": 0.13517,
    "h": 266.9
  },
  "luminance": 0.03389
}

Semantic roles & 50–950 ramp

primary

#172C7A

secondary

#AF973E

accent

#C63DEB

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07050F

muted

#7A7A7F

Preview Lab

Preview with #172C7A

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

Preview Lab → · Contrast checker → · Palette generator →