#517EDC#517EDC

#517EDC is a mid, vivid blue. Relative luminance 0.218; OKLCH L 60.7% C 0.151 H 263.3°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#517EDC
RGB	rgb(81, 126, 220)
HSL	hsl(221, 67%, 59%)
HSV	hsv(221, 63%, 86%)
CMYK	cmyk(63.2%, 42.7%, 0%, 13.7%)
CIE-LAB	lab(53.85, 13.92, -52.72)
CIE-LCH	lch(53.85, 54.52, 284.79°)
OKLab	oklab(60.68% -0.0176 -0.1504)
OKLCH	oklch(60.68% 0.151 263.3)
XYZ	xyz(23.7680, 21.8362, 70.6585)
Luminance	0.2184 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517EDC #DCAF51

analogous

#51C3DC #517EDC #6A51DC

triadic

#517EDC #DC517E #7EDC51

tetradic

#517EDC #DC51C3 #DCAF51 #51DC6A

square

#517EDC #DC51C3 #DCAF51 #51DC6A

split-complementary

#517EDC #DC6A51 #C3DC51

monochromatic

#1E4495 #285CC8 #517EDC #84A4E6 #B7CAF0

Accessibility & contrast

On white

3.91

#517EDC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#517EDC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517EDC

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517EDC	#FFFFFF	#000000	##000000
##517EDC	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5388E0

Deuteranopia (green-blind)

#3D7BDA

Tritanopia (blue-blind)

#0093A2

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #517edc;
/* rgb */ color: rgb(81, 126, 220);
/* oklch */ color: oklch(60.7% 0.151 263.3);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#517edc",
  "rgb": {
    "r": 81,
    "g": 126,
    "b": 220
  },
  "hsl": {
    "h": 220.576,
    "s": 66.507,
    "l": 59.02
  },
  "oklch": {
    "l": 0.60679,
    "c": 0.15139,
    "h": 263.3
  },
  "luminance": 0.21838
}

Semantic roles & 50–950 ramp

primary

#517EDC

secondary

#E0CEA9

accent

#B23EE9

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0D0F16

muted

#7E7E84

Preview Lab

Preview with #517EDC

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

Preview Lab → · Contrast checker → · Palette generator →