#172D90#172D90

#172D90 is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.6% C 0.164 H 267.0°. Best body text is #FFFFFF at 11.57:1 contrast (WCAG AA passes).

Color values

HEX	#172D90
RGB	rgb(23, 45, 144)
HSL	hsl(229, 72%, 33%)
HSV	hsv(229, 84%, 56%)
CMYK	cmyk(84%, 68.7%, 0%, 43.5%)
CIE-LAB	lab(23.91, 30.59, -56.58)
CIE-LCH	lch(23.91, 64.33, 298.40°)
OKLab	oklab(35.61% -0.0086 -0.1639)
OKLCH	oklch(35.61% 0.164 267)
XYZ	xyz(6.3240, 4.0718, 26.8328)
Luminance	0.0407 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172D90 #907A17

analogous

#176990 #172D90 #3E1790

triadic

#172D90 #90172D #2D9017

tetradic

#172D90 #901769 #907A17 #17903E

square

#172D90 #901769 #907A17 #17903E

split-complementary

#172D90 #903E17 #699017

monochromatic

#060C26 #0F1D5B #172D90 #1F3DC5 #415EE1

Accessibility & contrast

On white

11.57

#172D90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#172D90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172D90

11.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172D90	#FFFFFF	#000000	##FFFFFF
##172D90	1.00	11.57	1.81	11.57
#FFFFFF	11.57	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F93

Deuteranopia (green-blind)

#00338E

Tritanopia (blue-blind)

#00485A

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #172d90;
/* rgb */ color: rgb(23, 45, 144);
/* oklch */ color: oklch(35.6% 0.164 267.0);

Tailwind

colors: {
  custom: {
    50: '#6c66b2',
    500: '#172d90',
    950: '#000000',
  },
}

SCSS

$custom: #172d90;
$custom-light: #6c66b2;
$custom-dark: #000000;

JSON

{
  "hex": "#172d90",
  "rgb": {
    "r": 23,
    "g": 45,
    "b": 144
  },
  "hsl": {
    "h": 229.091,
    "s": 72.455,
    "l": 32.745
  },
  "oklch": {
    "l": 0.35612,
    "c": 0.16417,
    "h": 267
  },
  "luminance": 0.04073
}

Semantic roles & 50–950 ramp

primary

#172D90

secondary

#C1AA42

accent

#CE39EF

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080511

muted

#7B7A80

Preview Lab

Preview with #172D90

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

Preview Lab → · Contrast checker → · Palette generator →