#172155#172155

#172155 is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.4% C 0.095 H 270.6°. Best body text is #FFFFFF at 15.16:1 contrast (WCAG AA passes).

Color values

HEX	#172155
RGB	rgb(23, 33, 85)
HSL	hsl(230, 57%, 21%)
HSV	hsv(230, 73%, 33%)
CMYK	cmyk(72.9%, 61.2%, 0%, 66.7%)
CIE-LAB	lab(15.09, 15.40, -32.97)
CIE-LCH	lch(15.09, 36.38, 295.04°)
OKLab	oklab(27.39% 0.001 -0.0949)
OKLCH	oklch(27.39% 0.095 270.6)
XYZ	xyz(2.5363, 1.9255, 8.8306)
Luminance	0.0193 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172155 #554B17

analogous

#174055 #172155 #2C1755

triadic

#172155 #551721 #215517

tetradic

#172155 #551740 #554B17 #17552C

square

#172155 #551740 #554B17 #17552C

split-complementary

#172155 #552C17 #405517

monochromatic

#070918 #0A0E25 #172155 #243485 #3146B5

Accessibility & contrast

On white

15.16

#172155 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#172155 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172155

15.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172155	#FFFFFF	#000000	##FFFFFF
##172155	1.00	15.16	1.39	15.16
#FFFFFF	15.16	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002957

Deuteranopia (green-blind)

#002354

Tritanopia (blue-blind)

#002E37

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #172155;
/* rgb */ color: rgb(23, 33, 85);
/* oklch */ color: oklch(27.4% 0.095 270.6);

Tailwind

colors: {
  custom: {
    50: '#5d5b85',
    500: '#172155',
    950: '#000000',
  },
}

SCSS

$custom: #172155;
$custom-light: #5d5b85;
$custom-dark: #000000;

JSON

{
  "hex": "#172155",
  "rgb": {
    "r": 23,
    "g": 33,
    "b": 85
  },
  "hsl": {
    "h": 230.323,
    "s": 57.407,
    "l": 21.176
  },
  "oklch": {
    "l": 0.27393,
    "c": 0.09488,
    "h": 270.6
  },
  "luminance": 0.01926
}

Semantic roles & 50–950 ramp

primary

#172155

secondary

#8C7F3C

accent

#C847E1

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#05040B

muted

#79797C

Preview Lab

Preview with #172155

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

Preview Lab → · Contrast checker → · Palette generator →