#172E53#172E53

#172E53 is a dark, moderate blue. Relative luminance 0.028; OKLCH L 30.4% C 0.073 H 259.5°. Best body text is #FFFFFF at 13.53:1 contrast (WCAG AA passes).

Color values

HEX	#172E53
RGB	rgb(23, 46, 83)
HSL	hsl(217, 57%, 21%)
HSV	hsv(217, 72%, 33%)
CMYK	cmyk(72.3%, 44.6%, 0%, 67.5%)
CIE-LAB	lab(19.06, 4.97, -25.24)
CIE-LCH	lch(19.06, 25.73, 281.14°)
OKLab	oklab(30.37% -0.0133 -0.0719)
OKLCH	oklch(30.37% 0.073 259.5)
XYZ	xyz(2.8911, 2.7604, 8.5624)
Luminance	0.0276 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172E53 #533C17

analogous

#174C53 #172E53 #1E1753

triadic

#172E53 #53172E #2E5317

tetradic

#172E53 #53174C #533C17 #17531E

square

#172E53 #53174C #533C17 #17531E

split-complementary

#172E53 #531E17 #4C5317

monochromatic

#070D18 #0A1323 #172E53 #244983 #3263B3

Accessibility & contrast

On white

13.53

#172E53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#172E53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172E53

13.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172E53	#FFFFFF	#000000	##FFFFFF
##172E53	1.00	13.53	1.55	13.53
#FFFFFF	13.53	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D3154

Deuteranopia (green-blind)

#142C52

Tritanopia (blue-blind)

#00363C

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #172e53;
/* rgb */ color: rgb(23, 46, 83);
/* oklch */ color: oklch(30.4% 0.073 259.5);

Tailwind

colors: {
  custom: {
    50: '#5c6683',
    500: '#172e53',
    950: '#000000',
  },
}

SCSS

$custom: #172e53;
$custom-light: #5c6683;
$custom-dark: #000000;

JSON

{
  "hex": "#172e53",
  "rgb": {
    "r": 23,
    "g": 46,
    "b": 83
  },
  "hsl": {
    "h": 217,
    "s": 56.604,
    "l": 20.784
  },
  "oklch": {
    "l": 0.30369,
    "c": 0.07317,
    "h": 259.5
  },
  "luminance": 0.02761
}

Semantic roles & 50–950 ramp

primary

#172E53

secondary

#8A6C3C

accent

#A648E0

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04050A

muted

#797A7C

Preview Lab

Preview with #172E53

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

Preview Lab → · Contrast checker → · Palette generator →