#172C7C#172C7C

#172C7C is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.4% C 0.138 H 267.0°. Best body text is #FFFFFF at 12.44:1 contrast (WCAG AA passes).

Color values

HEX	#172C7C
RGB	rgb(23, 44, 124)
HSL	hsl(228, 69%, 29%)
HSV	hsv(228, 81%, 49%)
CMYK	cmyk(81.5%, 64.5%, 0%, 51.4%)
CIE-LAB	lab(21.72, 23.39, -47.64)
CIE-LCH	lch(21.72, 53.08, 296.15°)
OKLab	oklab(33.42% -0.0073 -0.1378)
OKLCH	oklch(33.42% 0.138 267)
XYZ	xyz(4.8909, 3.4382, 19.4707)
Luminance	0.0344 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C7C #7C6717

analogous

#175F7C #172C7C #35177C

triadic

#172C7C #7C172C #2C7C17

tetradic

#172C7C #7C175F #7C6717 #177C35

square

#172C7C #7C175F #7C6717 #177C35

split-complementary

#172C7C #7C3517 #5F7C17

monochromatic

#05091A #0D1A48 #172C7C #213EB0 #3456D9

Accessibility & contrast

On white

12.44

#172C7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#172C7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C7C

12.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C7C	#FFFFFF	#000000	##FFFFFF
##172C7C	1.00	12.44	1.69	12.44
#FFFFFF	12.44	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00397F

Deuteranopia (green-blind)

#002F7A

Tritanopia (blue-blind)

#00414F

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #172c7c;
/* rgb */ color: rgb(23, 44, 124);
/* oklch */ color: oklch(33.4% 0.138 267.0);

Tailwind

colors: {
  custom: {
    50: '#6764a3',
    500: '#172c7c',
    950: '#000000',
  },
}

SCSS

$custom: #172c7c;
$custom-light: #6764a3;
$custom-dark: #000000;

JSON

{
  "hex": "#172c7c",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 124
  },
  "hsl": {
    "h": 227.525,
    "s": 68.707,
    "l": 28.824
  },
  "oklch": {
    "l": 0.33415,
    "c": 0.138,
    "h": 267
  },
  "luminance": 0.03439
}

Semantic roles & 50–950 ramp

primary

#172C7C

secondary

#B1993E

accent

#C73CEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07050F

muted

#7A7A7F

Preview Lab

Preview with #172C7C

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

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