#172D7A#172D7A

#172D7A is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.4% C 0.134 H 266.6°. Best body text is #FFFFFF at 12.41:1 contrast (WCAG AA passes).

Color values

HEX	#172D7A
RGB	rgb(23, 45, 122)
HSL	hsl(227, 68%, 28%)
HSV	hsv(227, 81%, 48%)
CMYK	cmyk(81.1%, 63.1%, 0%, 52.2%)
CIE-LAB	lab(21.81, 21.88, -46.22)
CIE-LCH	lch(21.81, 51.14, 295.33°)
OKLab	oklab(33.43% -0.008 -0.1336)
OKLCH	oklch(33.43% 0.134 266.6)
XYZ	xyz(4.8034, 3.4635, 18.8240)
Luminance	0.0346 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172D7A #7A6417

analogous

#175E7A #172D7A #32177A

triadic

#172D7A #7A172D #2D7A17

tetradic

#172D7A #7A175E #7A6417 #177A32

square

#172D7A #7A175E #7A6417 #177A32

split-complementary

#172D7A #7A3217 #5E7A17

monochromatic

#05091A #0D1A47 #172D7A #2140AD #3358D9

Accessibility & contrast

On white

12.41

#172D7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#172D7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172D7A

12.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172D7A	#FFFFFF	#000000	##FFFFFF
##172D7A	1.00	12.41	1.69	12.41
#FFFFFF	12.41	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00397D

Deuteranopia (green-blind)

#003079

Tritanopia (blue-blind)

#00414F

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #172d7a;
/* rgb */ color: rgb(23, 45, 122);
/* oklch */ color: oklch(33.4% 0.134 266.6);

Tailwind

colors: {
  custom: {
    50: '#6665a1',
    500: '#172d7a',
    950: '#000000',
  },
}

SCSS

$custom: #172d7a;
$custom-light: #6665a1;
$custom-dark: #000000;

JSON

{
  "hex": "#172d7a",
  "rgb": {
    "r": 23,
    "g": 45,
    "b": 122
  },
  "hsl": {
    "h": 226.667,
    "s": 68.276,
    "l": 28.431
  },
  "oklch": {
    "l": 0.33427,
    "c": 0.13387,
    "h": 266.6
  },
  "luminance": 0.03464
}

Semantic roles & 50–950 ramp

primary

#172D7A

secondary

#AF963E

accent

#C43DEB

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07050F

muted

#7A7A7F

Preview Lab

Preview with #172D7A

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

Preview Lab → · Contrast checker → · Palette generator →