#172B48#172B48

#172B48 is a dark, muted blue. Relative luminance 0.024; OKLCH L 28.8% C 0.059 H 257.7°. Best body text is #FFFFFF at 14.23:1 contrast (WCAG AA passes).

Color values

HEX	#172B48
RGB	rgb(23, 43, 72)
HSL	hsl(216, 52%, 19%)
HSV	hsv(216, 68%, 28%)
CMYK	cmyk(68.1%, 40.3%, 0%, 71.8%)
CIE-LAB	lab(17.36, 2.64, -20.51)
CIE-LCH	lch(17.36, 20.67, 277.33°)
OKLab	oklab(28.82% -0.0127 -0.0581)
OKLCH	oklch(28.82% 0.059 257.7)
XYZ	xyz(2.3865, 2.3776, 6.4628)
Luminance	0.0238 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172B48 #483417

analogous

#174348 #172B48 #1B1748

triadic

#172B48 #48172B #2B4817

tetradic

#172B48 #481743 #483417 #17481B

square

#172B48 #481743 #483417 #17481B

split-complementary

#172B48 #481B17 #434817

monochromatic

#070E17 #080F1A #172B48 #264776 #3562A5

Accessibility & contrast

On white

14.23

#172B48 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#172B48 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172B48

14.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172B48	#FFFFFF	#000000	##FFFFFF
##172B48	1.00	14.23	1.48	14.23
#FFFFFF	14.23	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F2D49

Deuteranopia (green-blind)

#182947

Tritanopia (blue-blind)

#003236

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #172b48;
/* rgb */ color: rgb(23, 43, 72);
/* oklch */ color: oklch(28.8% 0.059 257.7);

Tailwind

colors: {
  custom: {
    50: '#59647b',
    500: '#172b48',
    950: '#000000',
  },
}

SCSS

$custom: #172b48;
$custom-light: #59647b;
$custom-dark: #000000;

JSON

{
  "hex": "#172b48",
  "rgb": {
    "r": 23,
    "g": 43,
    "b": 72
  },
  "hsl": {
    "h": 215.51,
    "s": 51.579,
    "l": 18.627
  },
  "oklch": {
    "l": 0.2882,
    "c": 0.05949,
    "h": 257.7
  },
  "luminance": 0.02378
}

Semantic roles & 50–950 ramp

primary

#172B48

secondary

#7F643C

accent

#A14DDB

background

#F5F5F7

surface

#E9EAED

border

#C5C6C8

text

#040509

muted

#79797B

Preview Lab

Preview with #172B48

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

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