#517DDC#517DDC

#517DDC is a mid, vivid blue. Relative luminance 0.216; OKLCH L 60.5% C 0.153 H 263.7°. Best body text is #000000 at 5.32:1 contrast (WCAG AA passes).

Color values

HEX	#517DDC
RGB	rgb(81, 125, 220)
HSL	hsl(221, 67%, 59%)
HSV	hsv(221, 63%, 86%)
CMYK	cmyk(63.2%, 43.2%, 0%, 13.7%)
CIE-LAB	lab(53.58, 14.53, -53.15)
CIE-LCH	lch(53.58, 55.10, 285.29°)
OKLab	oklab(60.47% -0.0166 -0.1516)
OKLCH	oklch(60.47% 0.153 263.7)
XYZ	xyz(23.6407, 21.5817, 70.6161)
Luminance	0.2158 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517DDC #DCB051

analogous

#51C3DC #517DDC #6B51DC

triadic

#517DDC #DC517D #7DDC51

tetradic

#517DDC #DC51C3 #DCB051 #51DC6B

square

#517DDC #DC51C3 #DCB051 #51DC6B

split-complementary

#517DDC #DC6B51 #C3DC51

monochromatic

#1E4495 #285BC8 #517DDC #84A3E6 #B7C9F0

Accessibility & contrast

On white

3.95

#517DDC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.32

#517DDC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517DDC

5.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517DDC	#FFFFFF	#000000	##000000
##517DDC	1.00	3.95	5.32	5.32
#FFFFFF	3.95	1.00	21.00	21.00
#000000	5.32	21.00	1.00	1.00
##000000	5.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5187E0

Deuteranopia (green-blind)

#3B7ADA

Tritanopia (blue-blind)

#0093A2

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #517ddc;
/* rgb */ color: rgb(81, 125, 220);
/* oklch */ color: oklch(60.5% 0.153 263.7);

Tailwind

colors: {
  custom: {
    50: '#8ea2e7',
    500: '#517ddc',
    950: '#000000',
  },
}

SCSS

$custom: #517ddc;
$custom-light: #8ea2e7;
$custom-dark: #000000;

JSON

{
  "hex": "#517ddc",
  "rgb": {
    "r": 81,
    "g": 125,
    "b": 220
  },
  "hsl": {
    "h": 221.007,
    "s": 66.507,
    "l": 59.02
  },
  "oklch": {
    "l": 0.6047,
    "c": 0.15256,
    "h": 263.7
  },
  "luminance": 0.21584
}

Semantic roles & 50–950 ramp

primary

#517DDC

secondary

#E0CEA9

accent

#B33EE9

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0D0F16

muted

#7E7E84

Preview Lab

Preview with #517DDC

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

Preview Lab → · Contrast checker → · Palette generator →