#517EDB#517EDB

#517EDB is a mid, vivid blue. Relative luminance 0.218; OKLCH L 60.6% C 0.150 H 263.2°. Best body text is #000000 at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#517EDB
RGB	rgb(81, 126, 219)
HSL	hsl(220, 66%, 59%)
HSV	hsv(220, 63%, 86%)
CMYK	cmyk(63%, 42.5%, 0%, 14.1%)
CIE-LAB	lab(53.80, 13.58, -52.25)
CIE-LCH	lch(53.80, 53.98, 284.57°)
OKLab	oklab(60.62% -0.0178 -0.149)
OKLCH	oklch(60.62% 0.15 263.2)
XYZ	xyz(23.6359, 21.7833, 69.9631)
Luminance	0.2179 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517EDB #DBAE51

analogous

#51C3DB #517EDB #6951DB

triadic

#517EDB #DB517E #7EDB51

tetradic

#517EDB #DB51C3 #DBAE51 #51DB69

square

#517EDB #DB51C3 #DBAE51 #51DB69

split-complementary

#517EDB #DB6951 #C3DB51

monochromatic

#1E4593 #295CC6 #517EDB #84A4E5 #B6C9F0

Accessibility & contrast

On white

3.92

#517EDB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.36

#517EDB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517EDB

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517EDB	#FFFFFF	#000000	##000000
##517EDB	1.00	3.92	5.36	5.36
#FFFFFF	3.92	1.00	21.00	21.00
#000000	5.36	21.00	1.00	1.00
##000000	5.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5387DF

Deuteranopia (green-blind)

#3E7BD9

Tritanopia (blue-blind)

#0093A2

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #517edb;
/* rgb */ color: rgb(81, 126, 219);
/* oklch */ color: oklch(60.6% 0.150 263.2);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#517edb",
  "rgb": {
    "r": 81,
    "g": 126,
    "b": 219
  },
  "hsl": {
    "h": 220.435,
    "s": 65.714,
    "l": 58.824
  },
  "oklch": {
    "l": 0.60618,
    "c": 0.15003,
    "h": 263.2
  },
  "luminance": 0.21786
}

Semantic roles & 50–950 ramp

primary

#517EDB

secondary

#DFCDA9

accent

#B13FE9

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0D0F16

muted

#7E7E84

Preview Lab

Preview with #517EDB

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

Preview Lab → · Contrast checker → · Palette generator →