#172878#172878

#172878 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.2% C 0.137 H 268.0°. Best body text is #FFFFFF at 13.03:1 contrast (WCAG AA passes).

Color values

HEX	#172878
RGB	rgb(23, 40, 120)
HSL	hsl(229, 68%, 28%)
HSV	hsv(229, 81%, 47%)
CMYK	cmyk(80.8%, 66.7%, 0%, 52.9%)
CIE-LAB	lab(20.26, 24.59, -47.48)
CIE-LCH	lch(20.26, 53.47, 297.38°)
OKLab	oklab(32.22% -0.0047 -0.1374)
OKLCH	oklch(32.22% 0.137 268)
XYZ	xyz(4.5011, 3.0553, 18.1182)
Luminance	0.0306 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172878 #786717

analogous

#175878 #172878 #371778

triadic

#172878 #781728 #287817

tetradic

#172878 #781758 #786717 #177837

square

#172878 #781758 #786717 #177837

split-complementary

#172878 #783717 #587817

monochromatic

#05091A #0D1745 #172878 #2139AB #324FD8

Accessibility & contrast

On white

13.03

#172878 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#172878 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172878

13.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172878	#FFFFFF	#000000	##FFFFFF
##172878	1.00	13.03	1.61	13.03
#FFFFFF	13.03	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00367B

Deuteranopia (green-blind)

#002C76

Tritanopia (blue-blind)

#003D4C

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #172878;
/* rgb */ color: rgb(23, 40, 120);
/* oklch */ color: oklch(32.2% 0.137 268.0);

Tailwind

colors: {
  custom: {
    50: '#6661a0',
    500: '#172878',
    950: '#000000',
  },
}

SCSS

$custom: #172878;
$custom-light: #6661a0;
$custom-dark: #000000;

JSON

{
  "hex": "#172878",
  "rgb": {
    "r": 23,
    "g": 40,
    "b": 120
  },
  "hsl": {
    "h": 229.485,
    "s": 67.832,
    "l": 28.039
  },
  "oklch": {
    "l": 0.32224,
    "c": 0.13746,
    "h": 268
  },
  "luminance": 0.03056
}

Semantic roles & 50–950 ramp

primary

#172878

secondary

#AD9A3E

accent

#CC3DEB

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050F

muted

#7A797E

Preview Lab

Preview with #172878

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

Preview Lab → · Contrast checker → · Palette generator →