#517BDC#517BDC

#517BDC is a mid, vivid blue. Relative luminance 0.211; OKLCH L 60.1% C 0.155 H 264.6°. Best body text is #000000 at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#517BDC
RGB	rgb(81, 123, 220)
HSL	hsl(222, 67%, 59%)
HSV	hsv(222, 63%, 86%)
CMYK	cmyk(63.2%, 44.1%, 0%, 13.7%)
CIE-LAB	lab(53.04, 15.75, -54.02)
CIE-LCH	lch(53.04, 56.27, 286.26°)
OKLab	oklab(60.05% -0.0146 -0.1542)
OKLCH	oklch(60.05% 0.155 264.6)
XYZ	xyz(23.3901, 21.0804, 70.5326)
Luminance	0.2108 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517BDC #DCB251

analogous

#51C0DC #517BDC #6D51DC

triadic

#517BDC #DC517B #7BDC51

tetradic

#517BDC #DC51C0 #DCB251 #51DC6D

square

#517BDC #DC51C0 #DCB251 #51DC6D

split-complementary

#517BDC #DC6D51 #C0DC51

monochromatic

#1E4295 #2858C8 #517BDC #84A2E6 #B7C8F0

Accessibility & contrast

On white

4.03

#517BDC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.22

#517BDC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517BDC

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517BDC	#FFFFFF	#000000	##000000
##517BDC	1.00	4.03	5.22	5.22
#FFFFFF	4.03	1.00	21.00	21.00
#000000	5.22	21.00	1.00	1.00
##000000	5.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D85E0

Deuteranopia (green-blind)

#3679DA

Tritanopia (blue-blind)

#0091A1

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #517bdc;
/* rgb */ color: rgb(81, 123, 220);
/* oklch */ color: oklch(60.1% 0.155 264.6);

Tailwind

colors: {
  custom: {
    50: '#8ea0e7',
    500: '#517bdc',
    950: '#000000',
  },
}

SCSS

$custom: #517bdc;
$custom-light: #8ea0e7;
$custom-dark: #000000;

JSON

{
  "hex": "#517bdc",
  "rgb": {
    "r": 81,
    "g": 123,
    "b": 220
  },
  "hsl": {
    "h": 221.871,
    "s": 66.507,
    "l": 59.02
  },
  "oklch": {
    "l": 0.60052,
    "c": 0.15491,
    "h": 264.6
  },
  "luminance": 0.21083
}

Semantic roles & 50–950 ramp

primary

#517BDC

secondary

#E0CFA9

accent

#B63EE9

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #517BDC

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

Preview Lab → · Contrast checker → · Palette generator →