#172F5D#172F5D

#172F5D is a dark, moderate blue. Relative luminance 0.030; OKLCH L 31.4% C 0.088 H 261.9°. Best body text is #FFFFFF at 13.12:1 contrast (WCAG AA passes).

Color values

HEX	#172F5D
RGB	rgb(23, 47, 93)
HSL	hsl(219, 60%, 23%)
HSV	hsv(219, 75%, 36%)
CMYK	cmyk(75.3%, 49.5%, 0%, 63.5%)
CIE-LAB	lab(20.06, 8.40, -30.28)
CIE-LCH	lch(20.06, 31.42, 285.51°)
OKLab	oklab(31.37% -0.0123 -0.0867)
OKLCH	oklch(31.37% 0.088 261.9)
XYZ	xyz(3.3449, 3.0052, 10.7576)
Luminance	0.0301 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172F5D #5D4517

analogous

#17525D #172F5D #22175D

triadic

#172F5D #5D172F #2F5D17

tetradic

#172F5D #5D1752 #5D4517 #175D22

square

#172F5D #5D1752 #5D4517 #175D22

split-complementary

#172F5D #5D2217 #525D17

monochromatic

#060C19 #0B162C #172F5D #23488E #2F61BF

Accessibility & contrast

On white

13.12

#172F5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#172F5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172F5D

13.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172F5D	#FFFFFF	#000000	##FFFFFF
##172F5D	1.00	13.12	1.60	13.12
#FFFFFF	13.12	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17345F

Deuteranopia (green-blind)

#092D5C

Tritanopia (blue-blind)

#003A41

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #172f5d;
/* rgb */ color: rgb(23, 47, 93);
/* oklch */ color: oklch(31.4% 0.088 261.9);

Tailwind

colors: {
  custom: {
    50: '#5e678b',
    500: '#172f5d',
    950: '#000000',
  },
}

SCSS

$custom: #172f5d;
$custom-light: #5e678b;
$custom-dark: #000000;

JSON

{
  "hex": "#172f5d",
  "rgb": {
    "r": 23,
    "g": 47,
    "b": 93
  },
  "hsl": {
    "h": 219.429,
    "s": 60.345,
    "l": 22.745
  },
  "oklch": {
    "l": 0.31366,
    "c": 0.08759,
    "h": 261.9
  },
  "luminance": 0.03006
}

Semantic roles & 50–950 ramp

primary

#172F5D

secondary

#94763C

accent

#AD44E3

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05060C

muted

#797A7D

Preview Lab

Preview with #172F5D

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

Preview Lab → · Contrast checker → · Palette generator →