#173A96#173A96

#173A96 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.7% C 0.156 H 264.3°. Best body text is #FFFFFF at 10.09:1 contrast (WCAG AA passes).

Color values

HEX	#173A96
RGB	rgb(23, 58, 150)
HSL	hsl(223, 73%, 34%)
HSV	hsv(223, 85%, 59%)
CMYK	cmyk(84.7%, 61.3%, 0%, 41.2%)
CIE-LAB	lab(27.87, 24.11, -53.78)
CIE-LCH	lch(27.87, 58.94, 294.15°)
OKLab	oklab(38.71% -0.0155 -0.1556)
OKLCH	oklch(38.71% 0.156 264.3)
XYZ	xyz(7.3695, 5.4094, 29.5040)
Luminance	0.0541 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173A96 #967317

analogous

#177A96 #173A96 #341796

triadic

#173A96 #96173A #3A9617

tetradic

#173A96 #96177A #967317 #179634

square

#173A96 #96177A #967317 #179634

split-complementary

#173A96 #963417 #7A9617

monochromatic

#07112C #0F2561 #173A96 #1F4FCB #4570E2

Accessibility & contrast

On white

10.09

#173A96 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#173A96 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173A96

10.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173A96	#FFFFFF	#000000	##FFFFFF
##173A96	1.00	10.09	2.08	10.09
#FFFFFF	10.09	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004899

Deuteranopia (green-blind)

#003C94

Tritanopia (blue-blind)

#005262

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #173a96;
/* rgb */ color: rgb(23, 58, 150);
/* oklch */ color: oklch(38.7% 0.156 264.3);

Tailwind

colors: {
  custom: {
    50: '#6d6fb6',
    500: '#173a96',
    950: '#000000',
  },
}

SCSS

$custom: #173a96;
$custom-light: #6d6fb6;
$custom-dark: #000000;

JSON

{
  "hex": "#173a96",
  "rgb": {
    "r": 23,
    "g": 58,
    "b": 150
  },
  "hsl": {
    "h": 223.465,
    "s": 73.41,
    "l": 33.922
  },
  "oklch": {
    "l": 0.38711,
    "c": 0.15638,
    "h": 264.3
  },
  "luminance": 0.0541
}

Semantic roles & 50–950 ramp

primary

#173A96

secondary

#C3A145

accent

#BD38F0

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #173A96

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

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