#517FCD#517FCD

#517FCD is a mid, vivid blue. Relative luminance 0.213; OKLCH L 60.0% C 0.130 H 260.4°. Best body text is #000000 at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#517FCD
RGB	rgb(81, 127, 205)
HSL	hsl(218, 55%, 56%)
HSV	hsv(218, 60%, 80%)
CMYK	cmyk(60.5%, 38%, 0%, 19.6%)
CIE-LAB	lab(53.31, 8.22, -45.10)
CIE-LCH	lch(53.31, 45.85, 280.33°)
OKLab	oklab(60% -0.0217 -0.128)
OKLCH	oklch(60% 0.13 260.4)
XYZ	xyz(21.9983, 21.3339, 60.7043)
Luminance	0.2134 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517FCD #CD9F51

analogous

#51BDCD #517FCD #6151CD

triadic

#517FCD #CD517F #7FCD51

tetradic

#517FCD #CD51BD #CD9F51 #51CD61

square

#517FCD #CD51BD #CD9F51 #51CD61

split-complementary

#517FCD #CD6151 #BDCD51

monochromatic

#25467F #3260AF #517FCD #81A2DB #B0C5E8

Accessibility & contrast

On white

3.99

#517FCD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.27

#517FCD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517FCD

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517FCD	#FFFFFF	#000000	##000000
##517FCD	1.00	3.99	5.27	5.27
#FFFFFF	3.99	1.00	21.00	21.00
#000000	5.27	21.00	1.00	1.00
##000000	5.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E86D0

Deuteranopia (green-blind)

#4D7ACB

Tritanopia (blue-blind)

#00919C

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #517fcd;
/* rgb */ color: rgb(81, 127, 205);
/* oklch */ color: oklch(60.0% 0.130 260.4);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#517fcd",
  "rgb": {
    "r": 81,
    "g": 127,
    "b": 205
  },
  "hsl": {
    "h": 217.742,
    "s": 55.357,
    "l": 56.078
  },
  "oklch": {
    "l": 0.59997,
    "c": 0.12985,
    "h": 260.4
  },
  "luminance": 0.21336
}

Semantic roles & 50–950 ramp

primary

#517FCD

secondary

#D7C4A3

accent

#A749DF

background

#F9FAFD

surface

#F1F3FB

border

#CBCDD4

text

#0D0F15

muted

#7E7F83

Preview Lab

Preview with #517FCD

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

Preview Lab → · Contrast checker → · Palette generator →