#517FD0#517FD0

#517FD0 is a mid, vivid blue. Relative luminance 0.215; OKLCH L 60.2% C 0.134 H 261.0°. Best body text is #000000 at 5.30:1 contrast (WCAG AA passes).

Color values

HEX	#517FD0
RGB	rgb(81, 127, 208)
HSL	hsl(218, 57%, 57%)
HSV	hsv(218, 61%, 82%)
CMYK	cmyk(61.1%, 38.9%, 0%, 18.4%)
CIE-LAB	lab(53.47, 9.23, -46.55)
CIE-LCH	lch(53.47, 47.46, 281.22°)
OKLab	oklab(60.17% -0.021 -0.1323)
OKLCH	oklch(60.17% 0.134 261)
XYZ	xyz(22.3639, 21.4801, 62.6298)
Luminance	0.2148 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517FD0 #D0A251

analogous

#51BED0 #517FD0 #6351D0

triadic

#517FD0 #D0517F #7FD051

tetradic

#517FD0 #D051BE #D0A251 #51D063

square

#517FD0 #D051BE #D0A251 #51D063

split-complementary

#517FD0 #D06351 #BED051

monochromatic

#234683 #3060B3 #517FD0 #81A2DD #B1C6EA

Accessibility & contrast

On white

3.96

#517FD0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.30

#517FD0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517FD0

5.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517FD0	#FFFFFF	#000000	##000000
##517FD0	1.00	3.96	5.30	5.30
#FFFFFF	3.96	1.00	21.00	21.00
#000000	5.30	21.00	1.00	1.00
##000000	5.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C86D3

Deuteranopia (green-blind)

#4A7ACE

Tritanopia (blue-blind)

#00919D

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #517fd0;
/* rgb */ color: rgb(81, 127, 208);
/* oklch */ color: oklch(60.2% 0.134 261.0);

Tailwind

colors: {
  custom: {
    50: '#8ca3df',
    500: '#517fd0',
    950: '#000000',
  },
}

SCSS

$custom: #517fd0;
$custom-light: #8ca3df;
$custom-dark: #000000;

JSON

{
  "hex": "#517fd0",
  "rgb": {
    "r": 81,
    "g": 127,
    "b": 208
  },
  "hsl": {
    "h": 218.268,
    "s": 57.466,
    "l": 56.667
  },
  "oklch": {
    "l": 0.60171,
    "c": 0.13392,
    "h": 261
  },
  "luminance": 0.21482
}

Semantic roles & 50–950 ramp

primary

#517FD0

secondary

#D8C6A4

accent

#A947E1

background

#F9FAFD

surface

#F1F3FB

border

#CBCDD4

text

#0D0F15

muted

#7E7F83

Preview Lab

Preview with #517FD0

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

Preview Lab → · Contrast checker → · Palette generator →