#172B49#172B49

#172B49 is a dark, moderate blue. Relative luminance 0.024; OKLCH L 28.9% C 0.061 H 258.3°. Best body text is #FFFFFF at 14.21:1 contrast (WCAG AA passes).

Color values

HEX	#172B49
RGB	rgb(23, 43, 73)
HSL	hsl(216, 52%, 19%)
HSV	hsv(216, 68%, 29%)
CMYK	cmyk(68.5%, 41.1%, 0%, 71.4%)
CIE-LAB	lab(17.42, 3.04, -21.09)
CIE-LCH	lch(17.42, 21.31, 278.21°)
OKLab	oklab(28.89% -0.0124 -0.0598)
OKLCH	oklch(28.89% 0.061 258.3)
XYZ	xyz(2.4194, 2.3907, 6.6360)
Luminance	0.0239 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172B49 #493517

analogous

#174449 #172B49 #1C1749

triadic

#172B49 #49172B #2B4917

tetradic

#172B49 #491744 #493517 #17491C

square

#172B49 #491744 #493517 #17491C

split-complementary

#172B49 #491C17 #444917

monochromatic

#070E17 #08101A #172B49 #264678 #3462A6

Accessibility & contrast

On white

14.21

#172B49 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#172B49 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172B49

14.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172B49	#FFFFFF	#000000	##FFFFFF
##172B49	1.00	14.21	1.48	14.21
#FFFFFF	14.21	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E2D4A

Deuteranopia (green-blind)

#172948

Tritanopia (blue-blind)

#003236

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #172b49;
/* rgb */ color: rgb(23, 43, 73);
/* oklch */ color: oklch(28.9% 0.061 258.3);

Tailwind

colors: {
  custom: {
    50: '#5a647c',
    500: '#172b49',
    950: '#000000',
  },
}

SCSS

$custom: #172b49;
$custom-light: #5a647c;
$custom-dark: #000000;

JSON

{
  "hex": "#172b49",
  "rgb": {
    "r": 23,
    "g": 43,
    "b": 73
  },
  "hsl": {
    "h": 216,
    "s": 52.083,
    "l": 18.824
  },
  "oklch": {
    "l": 0.28888,
    "c": 0.0611,
    "h": 258.3
  },
  "luminance": 0.02391
}

Semantic roles & 50–950 ramp

primary

#172B49

secondary

#80653C

accent

#A24CDC

background

#F5F5F7

surface

#E9EAEE

border

#C5C6C9

text

#040509

muted

#79797B

Preview Lab

Preview with #172B49

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

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