#172F5E#172F5E

#172F5E is a dark, moderate blue. Relative luminance 0.030; OKLCH L 31.4% C 0.089 H 262.2°. Best body text is #FFFFFF at 13.09:1 contrast (WCAG AA passes).

Color values

HEX	#172F5E
RGB	rgb(23, 47, 94)
HSL	hsl(220, 61%, 23%)
HSV	hsv(220, 76%, 37%)
CMYK	cmyk(75.5%, 50%, 0%, 63.1%)
CIE-LAB	lab(20.14, 8.82, -30.82)
CIE-LCH	lch(20.14, 32.06, 285.97°)
OKLab	oklab(31.44% -0.0121 -0.0883)
OKLCH	oklch(31.44% 0.089 262.2)
XYZ	xyz(3.3895, 3.0230, 10.9924)
Luminance	0.0302 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172F5E #5E4617

analogous

#17525E #172F5E #22175E

triadic

#172F5E #5E172F #2F5E17

tetradic

#172F5E #5E1752 #5E4617 #175E22

square

#172F5E #5E1752 #5E4617 #175E22

split-complementary

#172F5E #5E2217 #525E17

monochromatic

#060C19 #0B162D #172F5E #23488F #2F60C0

Accessibility & contrast

On white

13.09

#172F5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#172F5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172F5E

13.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172F5E	#FFFFFF	#000000	##FFFFFF
##172F5E	1.00	13.09	1.60	13.09
#FFFFFF	13.09	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#173460

Deuteranopia (green-blind)

#072E5D

Tritanopia (blue-blind)

#003A42

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #172f5e;
/* rgb */ color: rgb(23, 47, 94);
/* oklch */ color: oklch(31.4% 0.089 262.2);

Tailwind

colors: {
  custom: {
    50: '#5e678c',
    500: '#172f5e',
    950: '#000000',
  },
}

SCSS

$custom: #172f5e;
$custom-light: #5e678c;
$custom-dark: #000000;

JSON

{
  "hex": "#172f5e",
  "rgb": {
    "r": 23,
    "g": 47,
    "b": 94
  },
  "hsl": {
    "h": 219.718,
    "s": 60.684,
    "l": 22.941
  },
  "oklch": {
    "l": 0.31444,
    "c": 0.08915,
    "h": 262.2
  },
  "luminance": 0.03023
}

Semantic roles & 50–950 ramp

primary

#172F5E

secondary

#95773C

accent

#AE44E4

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05060C

muted

#797A7D

Preview Lab

Preview with #172F5E

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

Preview Lab → · Contrast checker → · Palette generator →