#172D53#172D53

#172D53 is a dark, moderate blue. Relative luminance 0.027; OKLCH L 30.1% C 0.075 H 260.6°. Best body text is #FFFFFF at 13.67:1 contrast (WCAG AA passes).

Color values

HEX	#172D53
RGB	rgb(23, 45, 83)
HSL	hsl(218, 57%, 21%)
HSV	hsv(218, 72%, 33%)
CMYK	cmyk(72.3%, 45.8%, 0%, 67.5%)
CIE-LAB	lab(18.73, 5.69, -25.77)
CIE-LCH	lch(18.73, 26.39, 282.46°)
OKLab	oklab(30.11% -0.0122 -0.0735)
OKLCH	oklch(30.11% 0.075 260.6)
XYZ	xyz(2.8525, 2.6832, 8.5495)
Luminance	0.0268 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172D53 #533D17

analogous

#174B53 #172D53 #1F1753

triadic

#172D53 #53172D #2D5317

tetradic

#172D53 #53174B #533D17 #17531F

square

#172D53 #53174B #533D17 #17531F

split-complementary

#172D53 #531F17 #4B5317

monochromatic

#070D18 #0A1323 #172D53 #244783 #3261B3

Accessibility & contrast

On white

13.67

#172D53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#172D53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172D53

13.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172D53	#FFFFFF	#000000	##FFFFFF
##172D53	1.00	13.67	1.54	13.67
#FFFFFF	13.67	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B3154

Deuteranopia (green-blind)

#122B52

Tritanopia (blue-blind)

#00363C

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #172d53;
/* rgb */ color: rgb(23, 45, 83);
/* oklch */ color: oklch(30.1% 0.075 260.6);

Tailwind

colors: {
  custom: {
    50: '#5c6583',
    500: '#172d53',
    950: '#000000',
  },
}

SCSS

$custom: #172d53;
$custom-light: #5c6583;
$custom-dark: #000000;

JSON

{
  "hex": "#172d53",
  "rgb": {
    "r": 23,
    "g": 45,
    "b": 83
  },
  "hsl": {
    "h": 218,
    "s": 56.604,
    "l": 20.784
  },
  "oklch": {
    "l": 0.30114,
    "c": 0.07451,
    "h": 260.6
  },
  "luminance": 0.02683
}

Semantic roles & 50–950 ramp

primary

#172D53

secondary

#8A6D3C

accent

#A848E0

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04050A

muted

#797A7C

Preview Lab

Preview with #172D53

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

Preview Lab → · Contrast checker → · Palette generator →