#172D64#172D64

#172D64 is a dark, moderate blue. Relative luminance 0.030; OKLCH L 31.5% C 0.101 H 264.8°. Best body text is #FFFFFF at 13.16:1 contrast (WCAG AA passes).

Color values

HEX	#172D64
RGB	rgb(23, 45, 100)
HSL	hsl(223, 63%, 24%)
HSV	hsv(223, 77%, 39%)
CMYK	cmyk(77%, 55%, 0%, 60.8%)
CIE-LAB	lab(19.96, 12.79, -35.05)
CIE-LCH	lch(19.96, 37.31, 290.04°)
OKLab	oklab(31.45% -0.0092 -0.1008)
OKLCH	oklch(31.45% 0.101 264.8)
XYZ	xyz(3.5912, 2.9786, 12.4398)
Luminance	0.0298 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172D64 #644E17

analogous

#175464 #172D64 #281764

triadic

#172D64 #64172D #2D6417

tetradic

#172D64 #641754 #644E17 #176428

square

#172D64 #641754 #644E17 #176428

split-complementary

#172D64 #642817 #546417

monochromatic

#060B19 #0C1732 #172D64 #224396 #2E5AC8

Accessibility & contrast

On white

13.16

#172D64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#172D64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172D64

13.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172D64	#FFFFFF	#000000	##FFFFFF
##172D64	1.00	13.16	1.60	13.16
#FFFFFF	13.16	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#093466

Deuteranopia (green-blind)

#002D63

Tritanopia (blue-blind)

#003A43

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #172d64;
/* rgb */ color: rgb(23, 45, 100);
/* oklch */ color: oklch(31.5% 0.101 264.8);

Tailwind

colors: {
  custom: {
    50: '#606591',
    500: '#172d64',
    950: '#000000',
  },
}

SCSS

$custom: #172d64;
$custom-light: #606591;
$custom-dark: #000000;

JSON

{
  "hex": "#172d64",
  "rgb": {
    "r": 23,
    "g": 45,
    "b": 100
  },
  "hsl": {
    "h": 222.857,
    "s": 62.602,
    "l": 24.118
  },
  "oklch": {
    "l": 0.31452,
    "c": 0.10122,
    "h": 264.8
  },
  "luminance": 0.02979
}

Semantic roles & 50–950 ramp

primary

#172D64

secondary

#9A803C

accent

#B742E6

background

#F6F6F8

surface

#EBEBF0

border

#C6C6CB

text

#05050D

muted

#7A7A7D

Preview Lab

Preview with #172D64

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

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