#517CD0#517CD0

#517CD0 is a mid, vivid blue. Relative luminance 0.207; OKLCH L 59.5% C 0.137 H 262.5°. Best body text is #000000 at 5.14:1 contrast (WCAG AA passes).

Color values

HEX	#517CD0
RGB	rgb(81, 124, 208)
HSL	hsl(220, 57%, 57%)
HSV	hsv(220, 61%, 82%)
CMYK	cmyk(61.1%, 40.4%, 0%, 18.4%)
CIE-LAB	lab(52.64, 11.06, -47.88)
CIE-LCH	lch(52.64, 49.14, 283.01°)
OKLab	oklab(59.53% -0.0179 -0.1362)
OKLCH	oklch(59.53% 0.137 262.5)
XYZ	xyz(21.9822, 20.7168, 62.5026)
Luminance	0.2072 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517CD0 #D0A551

analogous

#51BCD0 #517CD0 #6651D0

triadic

#517CD0 #D0517C #7CD051

tetradic

#517CD0 #D051BC #D0A551 #51D066

square

#517CD0 #D051BC #D0A551 #51D066

split-complementary

#517CD0 #D06651 #BCD051

monochromatic

#234483 #305DB3 #517CD0 #81A0DD #B1C5EA

Accessibility & contrast

On white

4.08

#517CD0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.14

#517CD0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517CD0

5.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517CD0	#FFFFFF	#000000	##000000
##517CD0	1.00	4.08	5.14	5.14
#FFFFFF	4.08	1.00	21.00	21.00
#000000	5.14	21.00	1.00	1.00
##000000	5.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5784D3

Deuteranopia (green-blind)

#4578CE

Tritanopia (blue-blind)

#008F9C

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #517cd0;
/* rgb */ color: rgb(81, 124, 208);
/* oklch */ color: oklch(59.5% 0.137 262.5);

Tailwind

colors: {
  custom: {
    50: '#8da1df',
    500: '#517cd0',
    950: '#000000',
  },
}

SCSS

$custom: #517cd0;
$custom-light: #8da1df;
$custom-dark: #000000;

JSON

{
  "hex": "#517cd0",
  "rgb": {
    "r": 81,
    "g": 124,
    "b": 208
  },
  "hsl": {
    "h": 219.685,
    "s": 57.466,
    "l": 56.667
  },
  "oklch": {
    "l": 0.59526,
    "c": 0.13735,
    "h": 262.5
  },
  "luminance": 0.20719
}

Semantic roles & 50–950 ramp

primary

#517CD0

secondary

#D8C7A4

accent

#AD47E1

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #517CD0

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

Preview Lab → · Contrast checker → · Palette generator →