#172377#172377

#172377 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.2% C 0.142 H 269.3°. Best body text is #FFFFFF at 13.61:1 contrast (WCAG AA passes).

Color values

HEX	#172377
RGB	rgb(23, 35, 119)
HSL	hsl(233, 68%, 28%)
HSV	hsv(233, 81%, 47%)
CMYK	cmyk(80.7%, 70.6%, 0%, 53.3%)
CIE-LAB	lab(18.87, 27.64, -49.13)
CIE-LCH	lch(18.87, 56.37, 299.36°)
OKLab	oklab(31.17% -0.0017 -0.1422)
OKLCH	oklch(31.17% 0.142 269.3)
XYZ	xyz(4.2830, 2.7157, 17.7476)
Luminance	0.0272 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172377 #776B17

analogous

#175377 #172377 #3B1777

triadic

#172377 #771723 #237717

tetradic

#172377 #771753 #776B17 #17773B

square

#172377 #771753 #776B17 #17773B

split-complementary

#172377 #773B17 #537717

monochromatic

#05081A #0D1444 #172377 #2132AA #3146D7

Accessibility & contrast

On white

13.61

#172377 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#172377 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172377

13.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172377	#FFFFFF	#000000	##FFFFFF
##172377	1.00	13.61	1.54	13.61
#FFFFFF	13.61	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00337A

Deuteranopia (green-blind)

#002975

Tritanopia (blue-blind)

#003A4A

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #172377;
/* rgb */ color: rgb(23, 35, 119);
/* oklch */ color: oklch(31.2% 0.142 269.3);

Tailwind

colors: {
  custom: {
    50: '#665e9f',
    500: '#172377',
    950: '#000000',
  },
}

SCSS

$custom: #172377;
$custom-light: #665e9f;
$custom-dark: #000000;

JSON

{
  "hex": "#172377",
  "rgb": {
    "r": 23,
    "g": 35,
    "b": 119
  },
  "hsl": {
    "h": 232.5,
    "s": 67.606,
    "l": 27.843
  },
  "oklch": {
    "l": 0.31172,
    "c": 0.14225,
    "h": 269.3
  },
  "luminance": 0.02716
}

Semantic roles & 50–950 ramp

primary

#172377

secondary

#AC9E3E

accent

#D53DEA

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040F

muted

#7A797E

Preview Lab

Preview with #172377

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

Preview Lab → · Contrast checker → · Palette generator →