#5173B2#5173B2

#5173B2 is a mid, moderate blue. Relative luminance 0.172; OKLCH L 55.8% C 0.106 H 262.0°. Best body text is #FFFFFF at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#5173B2
RGB	rgb(81, 115, 178)
HSL	hsl(219, 39%, 51%)
HSV	hsv(219, 54%, 70%)
CMYK	cmyk(54.5%, 35.4%, 0%, 30.2%)
CIE-LAB	lab(48.54, 6.56, -37.16)
CIE-LCH	lch(48.54, 37.73, 280.02°)
OKLab	oklab(55.84% -0.0148 -0.1049)
OKLCH	oklch(55.84% 0.106 262)
XYZ	xyz(17.5572, 17.2238, 44.5102)
Luminance	0.1722 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5173B2 #B29051

analogous

#51A3B2 #5173B2 #5F51B2

triadic

#5173B2 #B25173 #73B251

tetradic

#5173B2 #B251A3 #B29051 #51B25F

square

#5173B2 #B251A3 #B29051 #51B25F

split-complementary

#5173B2 #B25F51 #A3B251

monochromatic

#2A3C5F #3D5789 #5173B2 #7B95C5 #A6B7D8

Accessibility & contrast

On white

4.72

#5173B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#5173B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5173B2

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5173B2	#FFFFFF	#000000	##FFFFFF
##5173B2	1.00	4.72	4.44	4.72
#FFFFFF	4.72	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A78B5

Deuteranopia (green-blind)

#4E6FB1

Tritanopia (blue-blind)

#1A818A

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #5173b2;
/* rgb */ color: rgb(81, 115, 178);
/* oklch */ color: oklch(55.8% 0.106 262.0);

Tailwind

colors: {
  custom: {
    50: '#889bc9',
    500: '#5173b2',
    950: '#000000',
  },
}

SCSS

$custom: #5173b2;
$custom-light: #889bc9;
$custom-dark: #000000;

JSON

{
  "hex": "#5173b2",
  "rgb": {
    "r": 81,
    "g": 115,
    "b": 178
  },
  "hsl": {
    "h": 218.969,
    "s": 38.645,
    "l": 50.784
  },
  "oklch": {
    "l": 0.55839,
    "c": 0.10597,
    "h": 262
  },
  "luminance": 0.17225
}

Semantic roles & 50–950 ramp

primary

#5173B2

secondary

#C5B69A

accent

#A559CF

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0E13

muted

#7D7E82

Preview Lab

Preview with #5173B2

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

Preview Lab → · Contrast checker → · Palette generator →