#172D56#172D56

#172D56 is a dark, moderate blue. Relative luminance 0.027; OKLCH L 30.3% C 0.079 H 261.6°. Best body text is #FFFFFF at 13.58:1 contrast (WCAG AA passes).

Color values

HEX	#172D56
RGB	rgb(23, 45, 86)
HSL	hsl(219, 58%, 21%)
HSV	hsv(219, 73%, 34%)
CMYK	cmyk(73.3%, 47.7%, 0%, 66.3%)
CIE-LAB	lab(18.93, 6.94, -27.45)
CIE-LCH	lch(18.93, 28.31, 284.19°)
OKLab	oklab(30.34% -0.0115 -0.0784)
OKLCH	oklch(30.34% 0.079 261.6)
XYZ	xyz(2.9709, 2.7305, 9.1728)
Luminance	0.0273 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172D56 #564017

analogous

#174D56 #172D56 #211756

triadic

#172D56 #56172D #2D5617

tetradic

#172D56 #56174D #564017 #175621

square

#172D56 #56174D #564017 #175621

split-complementary

#172D56 #562117 #4D5617

monochromatic

#060D18 #0A1426 #172D56 #244686 #3160B7

Accessibility & contrast

On white

13.58

#172D56 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#172D56 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172D56

13.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172D56	#FFFFFF	#000000	##FFFFFF
##172D56	1.00	13.58	1.55	13.58
#FFFFFF	13.58	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#193158

Deuteranopia (green-blind)

#0E2B55

Tritanopia (blue-blind)

#00363D

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #172d56;
/* rgb */ color: rgb(23, 45, 86);
/* oklch */ color: oklch(30.3% 0.079 261.6);

Tailwind

colors: {
  custom: {
    50: '#5c6586',
    500: '#172d56',
    950: '#000000',
  },
}

SCSS

$custom: #172d56;
$custom-light: #5c6586;
$custom-dark: #000000;

JSON

{
  "hex": "#172d56",
  "rgb": {
    "r": 23,
    "g": 45,
    "b": 86
  },
  "hsl": {
    "h": 219.048,
    "s": 57.798,
    "l": 21.373
  },
  "oklch": {
    "l": 0.30336,
    "c": 0.07928,
    "h": 261.6
  },
  "luminance": 0.02731
}

Semantic roles & 50–950 ramp

primary

#172D56

secondary

#8D713C

accent

#AB47E1

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04050B

muted

#797A7C

Preview Lab

Preview with #172D56

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

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