#172B47#172B47

#172B47 is a dark, muted blue. Relative luminance 0.024; OKLCH L 28.8% C 0.058 H 257.0°. Best body text is #FFFFFF at 14.26:1 contrast (WCAG AA passes).

Color values

HEX	#172B47
RGB	rgb(23, 43, 71)
HSL	hsl(215, 51%, 18%)
HSV	hsv(215, 68%, 28%)
CMYK	cmyk(67.6%, 39.4%, 0%, 72.2%)
CIE-LAB	lab(17.29, 2.24, -19.92)
CIE-LCH	lch(17.29, 20.04, 276.41°)
OKLab	oklab(28.75% -0.013 -0.0564)
OKLCH	oklch(28.75% 0.058 257)
XYZ	xyz(2.3542, 2.3646, 6.2924)
Luminance	0.0237 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172B47 #473317

analogous

#174347 #172B47 #1B1747

triadic

#172B47 #47172B #2B4717

tetradic

#172B47 #471743 #473317 #17471B

square

#172B47 #471743 #473317 #17471B

split-complementary

#172B47 #471B17 #434717

monochromatic

#070E17 #080F19 #172B47 #264775 #3563A3

Accessibility & contrast

On white

14.26

#172B47 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#172B47 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172B47

14.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172B47	#FFFFFF	#000000	##FFFFFF
##172B47	1.00	14.26	1.47	14.26
#FFFFFF	14.26	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F2D48

Deuteranopia (green-blind)

#192846

Tritanopia (blue-blind)

#003135

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #172b47;
/* rgb */ color: rgb(23, 43, 71);
/* oklch */ color: oklch(28.8% 0.058 257.0);

Tailwind

colors: {
  custom: {
    50: '#59647a',
    500: '#172b47',
    950: '#000000',
  },
}

SCSS

$custom: #172b47;
$custom-light: #59647a;
$custom-dark: #000000;

JSON

{
  "hex": "#172b47",
  "rgb": {
    "r": 23,
    "g": 43,
    "b": 71
  },
  "hsl": {
    "h": 215,
    "s": 51.064,
    "l": 18.431
  },
  "oklch": {
    "l": 0.28753,
    "c": 0.05788,
    "h": 257
  },
  "luminance": 0.02365
}

Semantic roles & 50–950 ramp

primary

#172B47

secondary

#7E623C

accent

#A04DDB

background

#F5F5F7

surface

#E9EAED

border

#C5C6C8

text

#040509

muted

#79797B

Preview Lab

Preview with #172B47

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

Preview Lab → · Contrast checker → · Palette generator →