#172D7E#172D7E

#172D7E is a dark, vivid blue. Relative luminance 0.036; OKLCH L 33.8% C 0.140 H 266.7°. Best body text is #FFFFFF at 12.26:1 contrast (WCAG AA passes).

Color values

HEX	#172D7E
RGB	rgb(23, 45, 126)
HSL	hsl(227, 69%, 29%)
HSV	hsv(227, 82%, 49%)
CMYK	cmyk(81.7%, 64.3%, 0%, 50.6%)
CIE-LAB	lab(22.18, 23.49, -48.16)
CIE-LCH	lch(22.18, 53.59, 296.00°)
OKLab	oklab(33.81% -0.008 -0.1393)
OKLCH	oklch(33.81% 0.14 266.7)
XYZ	xyz(5.0563, 3.5647, 20.1562)
Luminance	0.0357 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172D7E #7E6817

analogous

#17617E #172D7E #34177E

triadic

#172D7E #7E172D #2D7E17

tetradic

#172D7E #7E1761 #7E6817 #177E34

square

#172D7E #7E1761 #7E6817 #177E34

split-complementary

#172D7E #7E3417 #617E17

monochromatic

#05091A #0E1B4A #172D7E #203FB2 #3558DA

Accessibility & contrast

On white

12.26

#172D7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#172D7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172D7E

12.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172D7E	#FFFFFF	#000000	##FFFFFF
##172D7E	1.00	12.26	1.71	12.26
#FFFFFF	12.26	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A81

Deuteranopia (green-blind)

#00307C

Tritanopia (blue-blind)

#004251

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #172d7e;
/* rgb */ color: rgb(23, 45, 126);
/* oklch */ color: oklch(33.8% 0.140 266.7);

Tailwind

colors: {
  custom: {
    50: '#6765a4',
    500: '#172d7e',
    950: '#000000',
  },
}

SCSS

$custom: #172d7e;
$custom-light: #6765a4;
$custom-dark: #000000;

JSON

{
  "hex": "#172d7e",
  "rgb": {
    "r": 23,
    "g": 45,
    "b": 126
  },
  "hsl": {
    "h": 227.184,
    "s": 69.128,
    "l": 29.216
  },
  "oklch": {
    "l": 0.3381,
    "c": 0.13955,
    "h": 266.7
  },
  "luminance": 0.03565
}

Semantic roles & 50–950 ramp

primary

#172D7E

secondary

#B39A3E

accent

#C63CEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07050F

muted

#7A7A7F

Preview Lab

Preview with #172D7E

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

Preview Lab → · Contrast checker → · Palette generator →