#172C7E#172C7E

#172C7E is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.6% C 0.141 H 267.0°. Best body text is #FFFFFF at 12.37:1 contrast (WCAG AA passes).

Color values

HEX	#172C7E
RGB	rgb(23, 44, 126)
HSL	hsl(228, 69%, 29%)
HSV	hsv(228, 82%, 49%)
CMYK	cmyk(81.7%, 65.1%, 0%, 50.6%)
CIE-LAB	lab(21.91, 24.19, -48.61)
CIE-LCH	lch(21.91, 54.29, 296.46°)
OKLab	oklab(33.61% -0.0073 -0.1406)
OKLCH	oklch(33.61% 0.141 267)
XYZ	xyz(5.0186, 3.4893, 20.1436)
Luminance	0.0349 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C7E #7E6917

analogous

#17607E #172C7E #36177E

triadic

#172C7E #7E172C #2C7E17

tetradic

#172C7E #7E1760 #7E6917 #177E36

square

#172C7E #7E1760 #7E6917 #177E36

split-complementary

#172C7E #7E3617 #607E17

monochromatic

#05091A #0E1A4A #172C7E #203EB2 #3557DA

Accessibility & contrast

On white

12.37

#172C7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#172C7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C7E

12.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C7E	#FFFFFF	#000000	##FFFFFF
##172C7E	1.00	12.37	1.70	12.37
#FFFFFF	12.37	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003981

Deuteranopia (green-blind)

#00307C

Tritanopia (blue-blind)

#004150

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #172c7e;
/* rgb */ color: rgb(23, 44, 126);
/* oklch */ color: oklch(33.6% 0.141 267.0);

Tailwind

colors: {
  custom: {
    50: '#6764a4',
    500: '#172c7e',
    950: '#000000',
  },
}

SCSS

$custom: #172c7e;
$custom-light: #6764a4;
$custom-dark: #000000;

JSON

{
  "hex": "#172c7e",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 126
  },
  "hsl": {
    "h": 227.767,
    "s": 69.128,
    "l": 29.216
  },
  "oklch": {
    "l": 0.33609,
    "c": 0.14082,
    "h": 267
  },
  "luminance": 0.0349
}

Semantic roles & 50–950 ramp

primary

#172C7E

secondary

#B39B3E

accent

#C83CEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07050F

muted

#7A7A7F

Preview Lab

Preview with #172C7E

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

Preview Lab → · Contrast checker → · Palette generator →