#173B95#173B95

#173B95 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.8% C 0.154 H 264.0°. Best body text is #FFFFFF at 10.02:1 contrast (WCAG AA passes).

Color values

HEX	#173B95
RGB	rgb(23, 59, 149)
HSL	hsl(223, 73%, 34%)
HSV	hsv(223, 85%, 58%)
CMYK	cmyk(84.6%, 60.4%, 0%, 41.6%)
CIE-LAB	lab(28.06, 23.02, -52.86)
CIE-LCH	lch(28.06, 57.66, 293.53°)
OKLab	oklab(38.82% -0.0162 -0.1529)
OKLCH	oklch(38.82% 0.154 264)
XYZ	xyz(7.3402, 5.4791, 29.0987)
Luminance	0.0548 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173B95 #957117

analogous

#177A95 #173B95 #321795

triadic

#173B95 #95173B #3B9517

tetradic

#173B95 #95177A #957117 #179532

square

#173B95 #95177A #957117 #179532

split-complementary

#173B95 #953217 #7A9517

monochromatic

#07112B #0F2660 #173B95 #1F50CA #4471E2

Accessibility & contrast

On white

10.02

#173B95 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#173B95 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173B95

10.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173B95	#FFFFFF	#000000	##FFFFFF
##173B95	1.00	10.02	2.10	10.02
#FFFFFF	10.02	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004898

Deuteranopia (green-blind)

#003D93

Tritanopia (blue-blind)

#005262

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #173b95;
/* rgb */ color: rgb(23, 59, 149);
/* oklch */ color: oklch(38.8% 0.154 264.0);

Tailwind

colors: {
  custom: {
    50: '#6c70b5',
    500: '#173b95',
    950: '#000000',
  },
}

SCSS

$custom: #173b95;
$custom-light: #6c70b5;
$custom-dark: #000000;

JSON

{
  "hex": "#173b95",
  "rgb": {
    "r": 23,
    "g": 59,
    "b": 149
  },
  "hsl": {
    "h": 222.857,
    "s": 73.256,
    "l": 33.725
  },
  "oklch": {
    "l": 0.38825,
    "c": 0.15374,
    "h": 264
  },
  "luminance": 0.0548
}

Semantic roles & 50–950 ramp

primary

#173B95

secondary

#C39F45

accent

#BB38F0

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #173B95

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

Preview Lab → · Contrast checker → · Palette generator →