#172A47#172A47

#172A47 is a dark, muted blue. Relative luminance 0.023; OKLCH L 28.5% C 0.059 H 258.6°. Best body text is #FFFFFF at 14.40:1 contrast (WCAG AA passes).

Color values

HEX	#172A47
RGB	rgb(23, 42, 71)
HSL	hsl(216, 51%, 18%)
HSV	hsv(216, 68%, 28%)
CMYK	cmyk(67.6%, 40.8%, 0%, 72.2%)
CIE-LAB	lab(16.95, 2.96, -20.46)
CIE-LCH	lch(16.95, 20.67, 278.23°)
OKLab	oklab(28.49% -0.0117 -0.058)
OKLCH	oklch(28.49% 0.059 258.6)
XYZ	xyz(2.3182, 2.2928, 6.2804)
Luminance	0.0229 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172A47 #473417

analogous

#174247 #172A47 #1C1747

triadic

#172A47 #47172A #2A4717

tetradic

#172A47 #471742 #473417 #17471C

square

#172A47 #471742 #473417 #17471C

split-complementary

#172A47 #471C17 #424717

monochromatic

#070E17 #080F19 #172A47 #264575 #3561A3

Accessibility & contrast

On white

14.40

#172A47 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#172A47 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172A47

14.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172A47	#FFFFFF	#000000	##FFFFFF
##172A47	1.00	14.40	1.46	14.40
#FFFFFF	14.40	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E2C48

Deuteranopia (green-blind)

#172846

Tritanopia (blue-blind)

#003135

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #172a47;
/* rgb */ color: rgb(23, 42, 71);
/* oklch */ color: oklch(28.5% 0.059 258.6);

Tailwind

colors: {
  custom: {
    50: '#59637a',
    500: '#172a47',
    950: '#000000',
  },
}

SCSS

$custom: #172a47;
$custom-light: #59637a;
$custom-dark: #000000;

JSON

{
  "hex": "#172a47",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 71
  },
  "hsl": {
    "h": 216.25,
    "s": 51.064,
    "l": 18.431
  },
  "oklch": {
    "l": 0.28488,
    "c": 0.05916,
    "h": 258.6
  },
  "luminance": 0.02293
}

Semantic roles & 50–950 ramp

primary

#172A47

secondary

#7E643C

accent

#A34DDB

background

#F5F5F7

surface

#E9EAED

border

#C5C6C8

text

#040509

muted

#79797B

Preview Lab

Preview with #172A47

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

Preview Lab → · Contrast checker → · Palette generator →