#172E5B#172E5B

#172E5B is a dark, moderate blue. Relative luminance 0.029; OKLCH L 31.0% C 0.086 H 262.2°. Best body text is #FFFFFF at 13.31:1 contrast (WCAG AA passes).

Color values

HEX	#172E5B
RGB	rgb(23, 46, 91)
HSL	hsl(220, 60%, 22%)
HSV	hsv(220, 75%, 36%)
CMYK	cmyk(74.7%, 49.5%, 0%, 64.3%)
CIE-LAB	lab(19.60, 8.29, -29.70)
CIE-LCH	lch(19.60, 30.83, 285.60°)
OKLab	oklab(30.97% -0.0116 -0.085)
OKLCH	oklch(30.97% 0.086 262.2)
XYZ	xyz(3.2180, 2.8911, 10.2840)
Luminance	0.0289 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172E5B #5B4417

analogous

#17505B #172E5B #22175B

triadic

#172E5B #5B172E #2E5B17

tetradic

#172E5B #5B1750 #5B4417 #175B22

square

#172E5B #5B1750 #5B4417 #175B22

split-complementary

#172E5B #5B2217 #505B17

monochromatic

#060C18 #0B152A #172E5B #23478C #305FBD

Accessibility & contrast

On white

13.31

#172E5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#172E5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172E5B

13.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172E5B	#FFFFFF	#000000	##FFFFFF
##172E5B	1.00	13.31	1.58	13.31
#FFFFFF	13.31	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17335D

Deuteranopia (green-blind)

#092D5A

Tritanopia (blue-blind)

#003840

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #172e5b;
/* rgb */ color: rgb(23, 46, 91);
/* oklch */ color: oklch(31.0% 0.086 262.2);

Tailwind

colors: {
  custom: {
    50: '#5e668a',
    500: '#172e5b',
    950: '#000000',
  },
}

SCSS

$custom: #172e5b;
$custom-light: #5e668a;
$custom-dark: #000000;

JSON

{
  "hex": "#172e5b",
  "rgb": {
    "r": 23,
    "g": 46,
    "b": 91
  },
  "hsl": {
    "h": 219.706,
    "s": 59.649,
    "l": 22.353
  },
  "oklch": {
    "l": 0.30966,
    "c": 0.08582,
    "h": 262.2
  },
  "luminance": 0.02891
}

Semantic roles & 50–950 ramp

primary

#172E5B

secondary

#92753C

accent

#AD45E3

background

#F5F6F8

surface

#E9EBF0

border

#C5C6CB

text

#05050B

muted

#797A7C

Preview Lab

Preview with #172E5B

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

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