#517DCD#517DCD

#517DCD is a mid, vivid blue. Relative luminance 0.208; OKLCH L 59.6% C 0.132 H 261.5°. Best body text is #000000 at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#517DCD
RGB	rgb(81, 125, 205)
HSL	hsl(219, 55%, 56%)
HSV	hsv(219, 60%, 80%)
CMYK	cmyk(60.5%, 39%, 0%, 19.6%)
CIE-LAB	lab(52.75, 9.44, -45.99)
CIE-LCH	lch(52.75, 46.95, 281.60°)
OKLab	oklab(59.56% -0.0196 -0.1306)
OKLCH	oklch(59.56% 0.132 261.5)
XYZ	xyz(21.7426, 20.8224, 60.6191)
Luminance	0.2082 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517DCD #CDA151

analogous

#51BBCD #517DCD #6351CD

triadic

#517DCD #CD517D #7DCD51

tetradic

#517DCD #CD51BB #CDA151 #51CD63

square

#517DCD #CD51BB #CDA151 #51CD63

split-complementary

#517DCD #CD6351 #BBCD51

monochromatic

#25457F #325EAF #517DCD #81A1DB #B0C4E8

Accessibility & contrast

On white

4.07

#517DCD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.16

#517DCD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517DCD

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517DCD	#FFFFFF	#000000	##000000
##517DCD	1.00	4.07	5.16	5.16
#FFFFFF	4.07	1.00	21.00	21.00
#000000	5.16	21.00	1.00	1.00
##000000	5.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A84D0

Deuteranopia (green-blind)

#4A79CB

Tritanopia (blue-blind)

#008F9B

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #517dcd;
/* rgb */ color: rgb(81, 125, 205);
/* oklch */ color: oklch(59.6% 0.132 261.5);

Tailwind

colors: {
  custom: {
    50: '#8ca2dc',
    500: '#517dcd',
    950: '#000000',
  },
}

SCSS

$custom: #517dcd;
$custom-light: #8ca2dc;
$custom-dark: #000000;

JSON

{
  "hex": "#517dcd",
  "rgb": {
    "r": 81,
    "g": 125,
    "b": 205
  },
  "hsl": {
    "h": 218.71,
    "s": 55.357,
    "l": 56.078
  },
  "oklch": {
    "l": 0.59564,
    "c": 0.13209,
    "h": 261.5
  },
  "luminance": 0.20824
}

Semantic roles & 50–950 ramp

primary

#517DCD

secondary

#D7C4A3

accent

#AA49DF

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0F15

muted

#7E7E83

Preview Lab

Preview with #517DCD

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

Preview Lab → · Contrast checker → · Palette generator →