#173F94#173F94

#173F94 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.6% C 0.147 H 262.7°. Best body text is #FFFFFF at 9.66:1 contrast (WCAG AA passes).

Color values

HEX	#173F94
RGB	rgb(23, 63, 148)
HSL	hsl(221, 73%, 34%)
HSV	hsv(221, 84%, 58%)
CMYK	cmyk(84.5%, 57.4%, 0%, 42%)
CIE-LAB	lab(29.09, 19.84, -50.56)
CIE-LCH	lch(29.09, 54.32, 291.43°)
OKLab	oklab(39.58% -0.0188 -0.1461)
OKLCH	oklch(39.58% 0.147 262.7)
XYZ	xyz(7.4742, 5.8744, 28.7512)
Luminance	0.0587 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173F94 #946C17

analogous

#177D94 #173F94 #2D1794

triadic

#173F94 #94173F #3F9417

tetradic

#173F94 #94177D #946C17 #17942D

square

#173F94 #94177D #946C17 #17942D

split-complementary

#173F94 #942D17 #7D9417

monochromatic

#07122A #0F285F #173F94 #1F56C9 #4476E2

Accessibility & contrast

On white

9.66

#173F94 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#173F94 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173F94

9.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173F94	#FFFFFF	#000000	##FFFFFF
##173F94	1.00	9.66	2.17	9.66
#FFFFFF	9.66	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B97

Deuteranopia (green-blind)

#003F92

Tritanopia (blue-blind)

#005463

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #173f94;
/* rgb */ color: rgb(23, 63, 148);
/* oklch */ color: oklch(39.6% 0.147 262.7);

Tailwind

colors: {
  custom: {
    50: '#6c73b4',
    500: '#173f94',
    950: '#000000',
  },
}

SCSS

$custom: #173f94;
$custom-light: #6c73b4;
$custom-dark: #000000;

JSON

{
  "hex": "#173f94",
  "rgb": {
    "r": 23,
    "g": 63,
    "b": 148
  },
  "hsl": {
    "h": 220.8,
    "s": 73.099,
    "l": 33.529
  },
  "oklch": {
    "l": 0.39577,
    "c": 0.14727,
    "h": 262.7
  },
  "luminance": 0.05875
}

Semantic roles & 50–950 ramp

primary

#173F94

secondary

#C39A44

accent

#B538F0

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #173F94

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

Preview Lab → · Contrast checker → · Palette generator →