#517CD5#517CD5

#517CD5 is a mid, vivid blue. Relative luminance 0.210; OKLCH L 59.8% C 0.144 H 263.3°. Best body text is #000000 at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#517CD5
RGB	rgb(81, 124, 213)
HSL	hsl(220, 61%, 58%)
HSV	hsv(220, 62%, 84%)
CMYK	cmyk(62%, 41.8%, 0%, 16.5%)
CIE-LAB	lab(52.91, 12.75, -50.27)
CIE-LCH	lch(52.91, 51.86, 284.24°)
OKLab	oklab(59.83% -0.0169 -0.1432)
OKLCH	oklch(59.83% 0.144 263.3)
XYZ	xyz(22.6071, 20.9667, 65.7935)
Luminance	0.2097 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517CD5 #D5AA51

analogous

#51BED5 #517CD5 #6851D5

triadic

#517CD5 #D5517C #7CD551

tetradic

#517CD5 #D551BE #D5AA51 #51D568

square

#517CD5 #D551BE #D5AA51 #51D568

split-complementary

#517CD5 #D56851 #BED551

monochromatic

#21448A #2D5CBC #517CD5 #82A1E1 #B4C6ED

Accessibility & contrast

On white

4.04

#517CD5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.19

#517CD5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517CD5

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517CD5	#FFFFFF	#000000	##000000
##517CD5	1.00	4.04	5.19	5.19
#FFFFFF	4.04	1.00	21.00	21.00
#000000	5.19	21.00	1.00	1.00
##000000	5.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5485D8

Deuteranopia (green-blind)

#4079D3

Tritanopia (blue-blind)

#00909E

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #517cd5;
/* rgb */ color: rgb(81, 124, 213);
/* oklch */ color: oklch(59.8% 0.144 263.3);

Tailwind

colors: {
  custom: {
    50: '#8da1e2',
    500: '#517cd5',
    950: '#000000',
  },
}

SCSS

$custom: #517cd5;
$custom-light: #8da1e2;
$custom-dark: #000000;

JSON

{
  "hex": "#517cd5",
  "rgb": {
    "r": 81,
    "g": 124,
    "b": 213
  },
  "hsl": {
    "h": 220.455,
    "s": 61.111,
    "l": 57.647
  },
  "oklch": {
    "l": 0.59828,
    "c": 0.14419,
    "h": 263.3
  },
  "luminance": 0.20969
}

Semantic roles & 50–950 ramp

primary

#517CD5

secondary

#DBCAA6

accent

#B044E4

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #517CD5

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

Preview Lab → · Contrast checker → · Palette generator →