#517CDC#517CDC

#517CDC is a mid, vivid blue. Relative luminance 0.213; OKLCH L 60.3% C 0.154 H 264.2°. Best body text is #000000 at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#517CDC
RGB	rgb(81, 124, 220)
HSL	hsl(221, 67%, 59%)
HSV	hsv(221, 63%, 86%)
CMYK	cmyk(63.2%, 43.6%, 0%, 13.7%)
CIE-LAB	lab(53.31, 15.14, -53.59)
CIE-LCH	lch(53.31, 55.69, 285.78°)
OKLab	oklab(60.26% -0.0156 -0.1529)
OKLCH	oklch(60.26% 0.154 264.2)
XYZ	xyz(23.5148, 21.3298, 70.5741)
Luminance	0.2133 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517CDC #DCB151

analogous

#51C2DC #517CDC #6C51DC

triadic

#517CDC #DC517C #7CDC51

tetradic

#517CDC #DC51C2 #DCB151 #51DC6C

square

#517CDC #DC51C2 #DCB151 #51DC6C

split-complementary

#517CDC #DC6C51 #C2DC51

monochromatic

#1E4395 #2859C8 #517CDC #84A2E6 #B7C9F0

Accessibility & contrast

On white

3.99

#517CDC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.27

#517CDC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517CDC

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517CDC	#FFFFFF	#000000	##000000
##517CDC	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)

#4F86E0

Deuteranopia (green-blind)

#3979DA

Tritanopia (blue-blind)

#0092A1

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #517cdc;
/* rgb */ color: rgb(81, 124, 220);
/* oklch */ color: oklch(60.3% 0.154 264.2);

Tailwind

colors: {
  custom: {
    50: '#8ea1e7',
    500: '#517cdc',
    950: '#000000',
  },
}

SCSS

$custom: #517cdc;
$custom-light: #8ea1e7;
$custom-dark: #000000;

JSON

{
  "hex": "#517cdc",
  "rgb": {
    "r": 81,
    "g": 124,
    "b": 220
  },
  "hsl": {
    "h": 221.439,
    "s": 66.507,
    "l": 59.02
  },
  "oklch": {
    "l": 0.6026,
    "c": 0.15374,
    "h": 264.2
  },
  "luminance": 0.21332
}

Semantic roles & 50–950 ramp

primary

#517CDC

secondary

#E0CFA9

accent

#B53EE9

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #517CDC

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

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