#517DE3#517DE3

#517DE3 is a mid, vivid blue. Relative luminance 0.220; OKLCH L 60.9% C 0.162 H 264.5°. Best body text is #000000 at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#517DE3
RGB	rgb(81, 125, 227)
HSL	hsl(222, 72%, 60%)
HSV	hsv(222, 64%, 89%)
CMYK	cmyk(64.3%, 44.9%, 0%, 11%)
CIE-LAB	lab(53.98, 16.93, -56.44)
CIE-LCH	lch(53.98, 58.92, 286.70°)
OKLab	oklab(60.91% -0.0154 -0.1613)
OKLCH	oklch(60.91% 0.162 264.5)
XYZ	xyz(24.5873, 21.9603, 75.6012)
Luminance	0.2196 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517DE3 #E3B751

analogous

#51C6E3 #517DE3 #6E51E3

triadic

#517DE3 #E3517D #7DE351

tetradic

#517DE3 #E351C6 #E3B751 #51E36E

square

#517DE3 #E351C6 #E3B751 #51E36E

split-complementary

#517DE3 #E36E51 #C6E351

monochromatic

#1A42A0 #2258D5 #517DE3 #86A4EB #BACCF4

Accessibility & contrast

On white

3.89

#517DE3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.39

#517DE3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517DE3

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517DE3	#FFFFFF	#000000	##000000
##517DE3	1.00	3.89	5.39	5.39
#FFFFFF	3.89	1.00	21.00	21.00
#000000	5.39	21.00	1.00	1.00
##000000	5.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B88E7

Deuteranopia (green-blind)

#327BE1

Tritanopia (blue-blind)

#0094A5

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #517de3;
/* rgb */ color: rgb(81, 125, 227);
/* oklch */ color: oklch(60.9% 0.162 264.5);

Tailwind

colors: {
  custom: {
    50: '#90a2ec',
    500: '#517de3',
    950: '#000000',
  },
}

SCSS

$custom: #517de3;
$custom-light: #90a2ec;
$custom-dark: #000000;

JSON

{
  "hex": "#517de3",
  "rgb": {
    "r": 81,
    "g": 125,
    "b": 227
  },
  "hsl": {
    "h": 221.918,
    "s": 72.277,
    "l": 60.392
  },
  "oklch": {
    "l": 0.60911,
    "c": 0.16204,
    "h": 264.5
  },
  "luminance": 0.21963
}

Semantic roles & 50–950 ramp

primary

#517DE3

secondary

#E4D3AC

accent

#9A11D4

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0F16

muted

#7E7E84

Preview Lab

Preview with #517DE3

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

Preview Lab → · Contrast checker → · Palette generator →