#172E5C#172E5C

#172E5C is a dark, moderate blue. Relative luminance 0.029; OKLCH L 31.0% C 0.087 H 262.5°. Best body text is #FFFFFF at 13.28:1 contrast (WCAG AA passes).

Color values

HEX	#172E5C
RGB	rgb(23, 46, 92)
HSL	hsl(220, 60%, 23%)
HSV	hsv(220, 75%, 36%)
CMYK	cmyk(75%, 50%, 0%, 63.9%)
CIE-LAB	lab(19.67, 8.71, -30.25)
CIE-LCH	lch(19.67, 31.48, 286.07°)
OKLab	oklab(31.04% -0.0114 -0.0866)
OKLCH	oklch(31.04% 0.087 262.5)
XYZ	xyz(3.2614, 2.9085, 10.5127)
Luminance	0.0291 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172E5C #5C4517

analogous

#17505C #172E5C #22175C

triadic

#172E5C #5C172E #2E5C17

tetradic

#172E5C #5C1750 #5C4517 #175C22

square

#172E5C #5C1750 #5C4517 #175C22

split-complementary

#172E5C #5C2217 #505C17

monochromatic

#060C18 #0B162B #172E5C #23468D #2F5FBE

Accessibility & contrast

On white

13.28

#172E5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#172E5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172E5C

13.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172E5C	#FFFFFF	#000000	##FFFFFF
##172E5C	1.00	13.28	1.58	13.28
#FFFFFF	13.28	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16335E

Deuteranopia (green-blind)

#072D5B

Tritanopia (blue-blind)

#003940

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #172e5c;
/* rgb */ color: rgb(23, 46, 92);
/* oklch */ color: oklch(31.0% 0.087 262.5);

Tailwind

colors: {
  custom: {
    50: '#5e668a',
    500: '#172e5c',
    950: '#000000',
  },
}

SCSS

$custom: #172e5c;
$custom-light: #5e668a;
$custom-dark: #000000;

JSON

{
  "hex": "#172e5c",
  "rgb": {
    "r": 23,
    "g": 46,
    "b": 92
  },
  "hsl": {
    "h": 220,
    "s": 60,
    "l": 22.549
  },
  "oklch": {
    "l": 0.31043,
    "c": 0.08739,
    "h": 262.5
  },
  "luminance": 0.02909
}

Semantic roles & 50–950 ramp

primary

#172E5C

secondary

#93763C

accent

#AE45E3

background

#F5F6F8

surface

#E9EBF0

border

#C5C6CB

text

#05050C

muted

#797A7D

Preview Lab

Preview with #172E5C

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

Preview Lab → · Contrast checker → · Palette generator →