#172C8E#172C8E

#172C8E is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.2% C 0.163 H 267.2°. Best body text is #FFFFFF at 11.75:1 contrast (WCAG AA passes).

Color values

HEX	#172C8E
RGB	rgb(23, 44, 142)
HSL	hsl(229, 72%, 32%)
HSV	hsv(229, 84%, 56%)
CMYK	cmyk(83.8%, 69%, 0%, 44.3%)
CIE-LAB	lab(23.46, 30.49, -56.08)
CIE-LCH	lch(23.46, 63.84, 298.53°)
OKLab	oklab(35.22% -0.008 -0.1625)
OKLCH	oklch(35.22% 0.163 267.2)
XYZ	xyz(6.1348, 3.9358, 26.0223)
Luminance	0.0394 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C8E #8E7917

analogous

#17678E #172C8E #3E178E

triadic

#172C8E #8E172C #2C8E17

tetradic

#172C8E #8E1767 #8E7917 #178E3E

square

#172C8E #8E1767 #8E7917 #178E3E

split-complementary

#172C8E #8E3E17 #678E17

monochromatic

#060B25 #0E1C59 #172C8E #203CC3 #3F5CE0

Accessibility & contrast

On white

11.75

#172C8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#172C8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C8E

11.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C8E	#FFFFFF	#000000	##FFFFFF
##172C8E	1.00	11.75	1.79	11.75
#FFFFFF	11.75	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E91

Deuteranopia (green-blind)

#00328C

Tritanopia (blue-blind)

#004759

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #172c8e;
/* rgb */ color: rgb(23, 44, 142);
/* oklch */ color: oklch(35.2% 0.163 267.2);

Tailwind

colors: {
  custom: {
    50: '#6c65b0',
    500: '#172c8e',
    950: '#000000',
  },
}

SCSS

$custom: #172c8e;
$custom-light: #6c65b0;
$custom-dark: #000000;

JSON

{
  "hex": "#172c8e",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 142
  },
  "hsl": {
    "h": 229.412,
    "s": 72.121,
    "l": 32.353
  },
  "oklch": {
    "l": 0.35223,
    "c": 0.16269,
    "h": 267.2
  },
  "luminance": 0.03937
}

Semantic roles & 50–950 ramp

primary

#172C8E

secondary

#C0AA40

accent

#CF39EF

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080511

muted

#7B7A80

Preview Lab

Preview with #172C8E

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

Preview Lab → · Contrast checker → · Palette generator →