#172C8D#172C8D

#172C8D is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.1% C 0.161 H 267.2°. Best body text is #FFFFFF at 11.79:1 contrast (WCAG AA passes).

Color values

HEX	#172C8D
RGB	rgb(23, 44, 141)
HSL	hsl(229, 72%, 32%)
HSV	hsv(229, 84%, 55%)
CMYK	cmyk(83.7%, 68.8%, 0%, 44.7%)
CIE-LAB	lab(23.36, 30.10, -55.63)
CIE-LCH	lch(23.36, 63.25, 298.42°)
OKLab	oklab(35.12% -0.0079 -0.1611)
OKLCH	oklch(35.12% 0.161 267.2)
XYZ	xyz(6.0601, 3.9059, 25.6287)
Luminance	0.0391 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C8D #8D7817

analogous

#17678D #172C8D #3D178D

triadic

#172C8D #8D172C #2C8D17

tetradic

#172C8D #8D1767 #8D7817 #178D3D

square

#172C8D #8D1767 #8D7817 #178D3D

split-complementary

#172C8D #8D3D17 #678D17

monochromatic

#060B24 #0E1C58 #172C8D #203CC2 #3F5BE0

Accessibility & contrast

On white

11.79

#172C8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#172C8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C8D

11.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C8D	#FFFFFF	#000000	##FFFFFF
##172C8D	1.00	11.79	1.78	11.79
#FFFFFF	11.79	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D90

Deuteranopia (green-blind)

#00328B

Tritanopia (blue-blind)

#004658

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #172c8d;
/* rgb */ color: rgb(23, 44, 141);
/* oklch */ color: oklch(35.1% 0.161 267.2);

Tailwind

colors: {
  custom: {
    50: '#6b65af',
    500: '#172c8d',
    950: '#000000',
  },
}

SCSS

$custom: #172c8d;
$custom-light: #6b65af;
$custom-dark: #000000;

JSON

{
  "hex": "#172c8d",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 141
  },
  "hsl": {
    "h": 229.322,
    "s": 71.951,
    "l": 32.157
  },
  "oklch": {
    "l": 0.3512,
    "c": 0.16135,
    "h": 267.2
  },
  "luminance": 0.03907
}

Semantic roles & 50–950 ramp

primary

#172C8D

secondary

#C0A940

accent

#CE39EF

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080510

muted

#7B7A7F

Preview Lab

Preview with #172C8D

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

Preview Lab → · Contrast checker → · Palette generator →