#173A95#173A95

#173A95 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.6% C 0.155 H 264.2°. Best body text is #FFFFFF at 10.12:1 contrast (WCAG AA passes).

Color values

HEX	#173A95
RGB	rgb(23, 58, 149)
HSL	hsl(223, 73%, 34%)
HSV	hsv(223, 85%, 58%)
CMYK	cmyk(84.6%, 61.1%, 0%, 41.6%)
CIE-LAB	lab(27.78, 23.71, -53.31)
CIE-LCH	lch(27.78, 58.35, 293.98°)
OKLab	oklab(38.62% -0.0156 -0.1542)
OKLCH	oklch(38.62% 0.155 264.2)
XYZ	xyz(7.2893, 5.3773, 29.0817)
Luminance	0.0538 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173A95 #957217

analogous

#177995 #173A95 #331795

triadic

#173A95 #95173A #3A9517

tetradic

#173A95 #951779 #957217 #179533

square

#173A95 #951779 #957217 #179533

split-complementary

#173A95 #953317 #799517

monochromatic

#07112B #0F2560 #173A95 #1F4FCA #4470E2

Accessibility & contrast

On white

10.12

#173A95 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#173A95 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173A95

10.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173A95	#FFFFFF	#000000	##FFFFFF
##173A95	1.00	10.12	2.08	10.12
#FFFFFF	10.12	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004898

Deuteranopia (green-blind)

#003C93

Tritanopia (blue-blind)

#005161

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #173a95;
/* rgb */ color: rgb(23, 58, 149);
/* oklch */ color: oklch(38.6% 0.155 264.2);

Tailwind

colors: {
  custom: {
    50: '#6c6fb5',
    500: '#173a95',
    950: '#000000',
  },
}

SCSS

$custom: #173a95;
$custom-light: #6c6fb5;
$custom-dark: #000000;

JSON

{
  "hex": "#173a95",
  "rgb": {
    "r": 23,
    "g": 58,
    "b": 149
  },
  "hsl": {
    "h": 223.333,
    "s": 73.256,
    "l": 33.725
  },
  "oklch": {
    "l": 0.38619,
    "c": 0.155,
    "h": 264.2
  },
  "luminance": 0.05378
}

Semantic roles & 50–950 ramp

primary

#173A95

secondary

#C3A045

accent

#BD38F0

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #173A95

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

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