#172D5F#172D5F

#172D5F is a dark, moderate blue. Relative luminance 0.029; OKLCH L 31.0% C 0.093 H 263.9°. Best body text is #FFFFFF at 13.32:1 contrast (WCAG AA passes).

Color values

HEX	#172D5F
RGB	rgb(23, 45, 95)
HSL	hsl(222, 61%, 23%)
HSV	hsv(222, 76%, 37%)
CMYK	cmyk(75.8%, 52.6%, 0%, 62.7%)
CIE-LAB	lab(19.58, 10.70, -32.38)
CIE-LCH	lch(19.58, 34.10, 288.28°)
OKLab	oklab(31.04% -0.0099 -0.0929)
OKLCH	oklch(31.04% 0.093 263.9)
XYZ	xyz(3.3566, 2.8848, 11.2042)
Luminance	0.0289 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172D5F #5F4917

analogous

#17515F #172D5F #25175F

triadic

#172D5F #5F172D #2D5F17

tetradic

#172D5F #5F1751 #5F4917 #175F25

square

#172D5F #5F1751 #5F4917 #175F25

split-complementary

#172D5F #5F2517 #515F17

monochromatic

#060C19 #0B162E #172D5F #234490 #2F5CC2

Accessibility & contrast

On white

13.32

#172D5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#172D5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172D5F

13.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172D5F	#FFFFFF	#000000	##FFFFFF
##172D5F	1.00	13.32	1.58	13.32
#FFFFFF	13.32	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#113361

Deuteranopia (green-blind)

#002C5E

Tritanopia (blue-blind)

#003941

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #172d5f;
/* rgb */ color: rgb(23, 45, 95);
/* oklch */ color: oklch(31.0% 0.093 263.9);

Tailwind

colors: {
  custom: {
    50: '#5f658d',
    500: '#172d5f',
    950: '#000000',
  },
}

SCSS

$custom: #172d5f;
$custom-light: #5f658d;
$custom-dark: #000000;

JSON

{
  "hex": "#172d5f",
  "rgb": {
    "r": 23,
    "g": 45,
    "b": 95
  },
  "hsl": {
    "h": 221.667,
    "s": 61.017,
    "l": 23.137
  },
  "oklch": {
    "l": 0.31039,
    "c": 0.09348,
    "h": 263.9
  },
  "luminance": 0.02885
}

Semantic roles & 50–950 ramp

primary

#172D5F

secondary

#967A3C

accent

#B344E4

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05050C

muted

#797A7D

Preview Lab

Preview with #172D5F

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

Preview Lab → · Contrast checker → · Palette generator →