#517ECD#517ECD

#517ECD is a mid, vivid blue. Relative luminance 0.211; OKLCH L 59.8% C 0.131 H 260.9°. Best body text is #000000 at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#517ECD
RGB	rgb(81, 126, 205)
HSL	hsl(218, 55%, 56%)
HSV	hsv(218, 60%, 80%)
CMYK	cmyk(60.5%, 38.5%, 0%, 19.6%)
CIE-LAB	lab(53.03, 8.83, -45.55)
CIE-LCH	lch(53.03, 46.39, 280.97°)
OKLab	oklab(59.78% -0.0207 -0.1293)
OKLCH	oklch(59.78% 0.131 260.9)
XYZ	xyz(21.8698, 21.0769, 60.6615)
Luminance	0.2108 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517ECD #CDA051

analogous

#51BCCD #517ECD #6251CD

triadic

#517ECD #CD517E #7ECD51

tetradic

#517ECD #CD51BC #CDA051 #51CD62

square

#517ECD #CD51BC #CDA051 #51CD62

split-complementary

#517ECD #CD6251 #BCCD51

monochromatic

#25457F #325FAF #517ECD #81A1DB #B0C4E8

Accessibility & contrast

On white

4.03

#517ECD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.22

#517ECD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517ECD

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517ECD	#FFFFFF	#000000	##000000
##517ECD	1.00	4.03	5.22	5.22
#FFFFFF	4.03	1.00	21.00	21.00
#000000	5.22	21.00	1.00	1.00
##000000	5.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C85D0

Deuteranopia (green-blind)

#4B79CB

Tritanopia (blue-blind)

#00909C

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #517ecd;
/* rgb */ color: rgb(81, 126, 205);
/* oklch */ color: oklch(59.8% 0.131 260.9);

Tailwind

colors: {
  custom: {
    50: '#8ca3dc',
    500: '#517ecd',
    950: '#000000',
  },
}

SCSS

$custom: #517ecd;
$custom-light: #8ca3dc;
$custom-dark: #000000;

JSON

{
  "hex": "#517ecd",
  "rgb": {
    "r": 81,
    "g": 126,
    "b": 205
  },
  "hsl": {
    "h": 218.226,
    "s": 55.357,
    "l": 56.078
  },
  "oklch": {
    "l": 0.5978,
    "c": 0.13097,
    "h": 260.9
  },
  "luminance": 0.21079
}

Semantic roles & 50–950 ramp

primary

#517ECD

secondary

#D7C4A3

accent

#A849DF

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0F15

muted

#7E7E83

Preview Lab

Preview with #517ECD

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

Preview Lab → · Contrast checker → · Palette generator →