#172C77#172C77

#172C77 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 32.9% C 0.131 H 266.8°. Best body text is #FFFFFF at 12.63:1 contrast (WCAG AA passes).

Color values

HEX	#172C77
RGB	rgb(23, 44, 119)
HSL	hsl(227, 68%, 28%)
HSV	hsv(227, 81%, 47%)
CMYK	cmyk(80.7%, 63%, 0%, 53.3%)
CIE-LAB	lab(21.26, 21.36, -45.21)
CIE-LCH	lch(21.26, 50.00, 295.29°)
OKLab	oklab(32.93% -0.0073 -0.1307)
OKLCH	oklch(32.93% 0.131 266.8)
XYZ	xyz(4.5826, 3.3149, 17.8475)
Luminance	0.0331 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C77 #776217

analogous

#175C77 #172C77 #321777

triadic

#172C77 #77172C #2C7717

tetradic

#172C77 #77175C #776217 #177732

square

#172C77 #77175C #776217 #177732

split-complementary

#172C77 #773217 #5C7717

monochromatic

#05091A #0D1944 #172C77 #213FAA #3156D7

Accessibility & contrast

On white

12.63

#172C77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#172C77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C77

12.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C77	#FFFFFF	#000000	##FFFFFF
##172C77	1.00	12.63	1.66	12.63
#FFFFFF	12.63	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003879

Deuteranopia (green-blind)

#002F76

Tritanopia (blue-blind)

#003F4D

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #172c77;
/* rgb */ color: rgb(23, 44, 119);
/* oklch */ color: oklch(32.9% 0.131 266.8);

Tailwind

colors: {
  custom: {
    50: '#65649f',
    500: '#172c77',
    950: '#000000',
  },
}

SCSS

$custom: #172c77;
$custom-light: #65649f;
$custom-dark: #000000;

JSON

{
  "hex": "#172c77",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 119
  },
  "hsl": {
    "h": 226.875,
    "s": 67.606,
    "l": 27.843
  },
  "oklch": {
    "l": 0.32935,
    "c": 0.13087,
    "h": 266.8
  },
  "luminance": 0.03315
}

Semantic roles & 50–950 ramp

primary

#172C77

secondary

#AC943E

accent

#C53DEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07050E

muted

#7A7A7E

Preview Lab

Preview with #172C77

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

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