#173A94#173A94

#173A94 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.5% C 0.154 H 264.2°. Best body text is #FFFFFF at 10.15:1 contrast (WCAG AA passes).

Color values

HEX	#173A94
RGB	rgb(23, 58, 148)
HSL	hsl(223, 73%, 34%)
HSV	hsv(223, 84%, 58%)
CMYK	cmyk(84.5%, 60.8%, 0%, 42%)
CIE-LAB	lab(27.70, 23.31, -52.84)
CIE-LCH	lch(27.70, 57.75, 293.80°)
OKLab	oklab(38.53% -0.0156 -0.1528)
OKLCH	oklch(38.53% 0.154 264.2)
XYZ	xyz(7.2098, 5.3455, 28.6630)
Luminance	0.0535 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173A94 #947117

analogous

#177894 #173A94 #321794

triadic

#173A94 #94173A #3A9417

tetradic

#173A94 #941778 #947117 #179432

square

#173A94 #941778 #947117 #179432

split-complementary

#173A94 #943217 #789417

monochromatic

#07102A #0F255F #173A94 #1F4FC9 #4470E2

Accessibility & contrast

On white

10.15

#173A94 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#173A94 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173A94

10.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173A94	#FFFFFF	#000000	##FFFFFF
##173A94	1.00	10.15	2.07	10.15
#FFFFFF	10.15	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004797

Deuteranopia (green-blind)

#003C92

Tritanopia (blue-blind)

#005161

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #173a94;
/* rgb */ color: rgb(23, 58, 148);
/* oklch */ color: oklch(38.5% 0.154 264.2);

Tailwind

colors: {
  custom: {
    50: '#6c6fb4',
    500: '#173a94',
    950: '#000000',
  },
}

SCSS

$custom: #173a94;
$custom-light: #6c6fb4;
$custom-dark: #000000;

JSON

{
  "hex": "#173a94",
  "rgb": {
    "r": 23,
    "g": 58,
    "b": 148
  },
  "hsl": {
    "h": 223.2,
    "s": 73.099,
    "l": 33.529
  },
  "oklch": {
    "l": 0.38528,
    "c": 0.15364,
    "h": 264.2
  },
  "luminance": 0.05346
}

Semantic roles & 50–950 ramp

primary

#173A94

secondary

#C39F44

accent

#BC38F0

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #173A94

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

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