#173E8E#173E8E

#173E8E is a dark, vivid blue. Relative luminance 0.056; OKLCH L 38.8% C 0.140 H 262.4°. Best body text is #FFFFFF at 9.92:1 contrast (WCAG AA passes).

Color values

HEX	#173E8E
RGB	rgb(23, 62, 142)
HSL	hsl(220, 72%, 32%)
HSV	hsv(220, 84%, 56%)
CMYK	cmyk(83.8%, 56.3%, 0%, 44.3%)
CIE-LAB	lab(28.33, 18.09, -48.13)
CIE-LCH	lch(28.33, 51.41, 290.60°)
OKLab	oklab(38.85% -0.0186 -0.1389)
OKLCH	oklch(38.85% 0.14 262.4)
XYZ	xyz(6.9567, 5.5796, 26.2963)
Luminance	0.0558 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173E8E #8E6717

analogous

#177A8E #173E8E #2B178E

triadic

#173E8E #8E173E #3E8E17

tetradic

#173E8E #8E177A #8E6717 #178E2B

square

#173E8E #8E177A #8E6717 #178E2B

split-complementary

#173E8E #8E2B17 #7A8E17

monochromatic

#061025 #0E2759 #173E8E #2055C3 #3F74E0

Accessibility & contrast

On white

9.92

#173E8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#173E8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173E8E

9.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173E8E	#FFFFFF	#000000	##FFFFFF
##173E8E	1.00	9.92	2.12	9.92
#FFFFFF	9.92	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004891

Deuteranopia (green-blind)

#003E8C

Tritanopia (blue-blind)

#00525F

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #173e8e;
/* rgb */ color: rgb(23, 62, 142);
/* oklch */ color: oklch(38.8% 0.140 262.4);

Tailwind

colors: {
  custom: {
    50: '#6a72b0',
    500: '#173e8e',
    950: '#000000',
  },
}

SCSS

$custom: #173e8e;
$custom-light: #6a72b0;
$custom-dark: #000000;

JSON

{
  "hex": "#173e8e",
  "rgb": {
    "r": 23,
    "g": 62,
    "b": 142
  },
  "hsl": {
    "h": 220.336,
    "s": 72.121,
    "l": 32.353
  },
  "oklch": {
    "l": 0.38845,
    "c": 0.14016,
    "h": 262.4
  },
  "luminance": 0.0558
}

Semantic roles & 50–950 ramp

primary

#173E8E

secondary

#C09640

accent

#B339EF

background

#F6F6FA

surface

#ECECF5

border

#C7C7CF

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #173E8E

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

Preview Lab → · Contrast checker → · Palette generator →