#517DF0#517DF0

#517DF0 is a mid, vivid blue. Relative luminance 0.227; OKLCH L 61.8% C 0.179 H 265.7°. Best body text is #000000 at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#517DF0
RGB	rgb(81, 125, 240)
HSL	hsl(223, 84%, 63%)
HSV	hsv(223, 66%, 94%)
CMYK	cmyk(66.3%, 47.9%, 0%, 5.9%)
CIE-LAB	lab(54.77, 21.40, -62.44)
CIE-LCH	lch(54.77, 66.00, 288.92°)
OKLab	oklab(61.76% -0.0136 -0.1789)
OKLCH	oklch(61.76% 0.179 265.7)
XYZ	xyz(26.4497, 22.7053, 85.4098)
Luminance	0.2271 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517DF0 #F0C451

analogous

#51CDF0 #517DF0 #7451F0

triadic

#517DF0 #F0517D #7DF051

tetradic

#517DF0 #F051CD #F0C451 #51F074

square

#517DF0 #F051CD #F0C451 #51F074

split-complementary

#517DF0 #F07451 #CDF051

monochromatic

#103EB7 #1953EB #517DF0 #89A7F5 #C2D1FA

Accessibility & contrast

On white

3.79

#517DF0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.54

#517DF0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517DF0

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517DF0	#FFFFFF	#000000	##000000
##517DF0	1.00	3.79	5.54	5.54
#FFFFFF	3.79	1.00	21.00	21.00
#000000	5.54	21.00	1.00	1.00
##000000	5.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F8BF4

Deuteranopia (green-blind)

#167CEE

Tritanopia (blue-blind)

#0098AB

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #517df0;
/* rgb */ color: rgb(81, 125, 240);
/* oklch */ color: oklch(61.8% 0.179 265.7);

Tailwind

colors: {
  custom: {
    50: '#92a2f6',
    500: '#517df0',
    950: '#000000',
  },
}

SCSS

$custom: #517df0;
$custom-light: #92a2f6;
$custom-dark: #000000;

JSON

{
  "hex": "#517df0",
  "rgb": {
    "r": 81,
    "g": 125,
    "b": 240
  },
  "hsl": {
    "h": 223.396,
    "s": 84.127,
    "l": 62.941
  },
  "oklch": {
    "l": 0.61762,
    "c": 0.17946,
    "h": 265.7
  },
  "luminance": 0.22708
}

Semantic roles & 50–950 ramp

primary

#517DF0

secondary

#EBDBB2

accent

#A405E1

background

#F9F9FF

surface

#F2F2FE

border

#CCCCD6

text

#0E0F17

muted

#7E7E85

Preview Lab

Preview with #517DF0

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

Preview Lab → · Contrast checker → · Palette generator →