#172F77#172F77

#172F77 is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.6% C 0.127 H 265.7°. Best body text is #FFFFFF at 12.29:1 contrast (WCAG AA passes).

Color values

HEX	#172F77
RGB	rgb(23, 47, 119)
HSL	hsl(225, 68%, 28%)
HSV	hsv(225, 81%, 47%)
CMYK	cmyk(80.7%, 60.5%, 0%, 53.3%)
CIE-LAB	lab(22.11, 19.23, -43.82)
CIE-LCH	lch(22.11, 47.86, 293.69°)
OKLab	oklab(33.57% -0.0094 -0.1266)
OKLCH	oklch(33.57% 0.127 265.7)
XYZ	xyz(4.6985, 3.5466, 17.8861)
Luminance	0.0355 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172F77 #775F17

analogous

#175F77 #172F77 #2F1777

triadic

#172F77 #77172F #2F7717

tetradic

#172F77 #77175F #775F17 #17772F

square

#172F77 #77175F #775F17 #17772F

split-complementary

#172F77 #772F17 #5F7717

monochromatic

#050A1A #0D1B44 #172F77 #2143AA #315BD7

Accessibility & contrast

On white

12.29

#172F77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#172F77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172F77

12.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172F77	#FFFFFF	#000000	##FFFFFF
##172F77	1.00	12.29	1.71	12.29
#FFFFFF	12.29	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A79

Deuteranopia (green-blind)

#003176

Tritanopia (blue-blind)

#00414E

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #172f77;
/* rgb */ color: rgb(23, 47, 119);
/* oklch */ color: oklch(33.6% 0.127 265.7);

Tailwind

colors: {
  custom: {
    50: '#65679f',
    500: '#172f77',
    950: '#000000',
  },
}

SCSS

$custom: #172f77;
$custom-light: #65679f;
$custom-dark: #000000;

JSON

{
  "hex": "#172f77",
  "rgb": {
    "r": 23,
    "g": 47,
    "b": 119
  },
  "hsl": {
    "h": 225,
    "s": 67.606,
    "l": 27.843
  },
  "oklch": {
    "l": 0.33568,
    "c": 0.12691,
    "h": 265.7
  },
  "luminance": 0.03547
}

Semantic roles & 50–950 ramp

primary

#172F77

secondary

#AC913E

accent

#BF3DEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #172F77

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

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