#517AE3#517AE3

#517AE3 is a mid, vivid blue. Relative luminance 0.212; OKLCH L 60.3% C 0.166 H 265.6°. Best body text is #000000 at 5.24:1 contrast (WCAG AA passes).

Color values

HEX	#517AE3
RGB	rgb(81, 122, 227)
HSL	hsl(223, 72%, 60%)
HSV	hsv(223, 64%, 89%)
CMYK	cmyk(64.3%, 46.3%, 0%, 11%)
CIE-LAB	lab(53.18, 18.77, -57.73)
CIE-LCH	lch(53.18, 60.70, 288.01°)
OKLab	oklab(60.3% -0.0126 -0.1651)
OKLCH	oklch(60.3% 0.166 265.6)
XYZ	xyz(24.2132, 21.2122, 75.4765)
Luminance	0.2121 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517AE3 #E3BA51

analogous

#51C3E3 #517AE3 #7151E3

triadic

#517AE3 #E3517A #7AE351

tetradic

#517AE3 #E351C3 #E3BA51 #51E371

square

#517AE3 #E351C3 #E3BA51 #51E371

split-complementary

#517AE3 #E37151 #C3E351

monochromatic

#1A3FA0 #2254D5 #517AE3 #86A2EB #BACBF4

Accessibility & contrast

On white

4.01

#517AE3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.24

#517AE3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517AE3

5.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517AE3	#FFFFFF	#000000	##000000
##517AE3	1.00	4.01	5.24	5.24
#FFFFFF	4.01	1.00	21.00	21.00
#000000	5.24	21.00	1.00	1.00
##000000	5.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4586E7

Deuteranopia (green-blind)

#2979E1

Tritanopia (blue-blind)

#0092A3

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #517ae3;
/* rgb */ color: rgb(81, 122, 227);
/* oklch */ color: oklch(60.3% 0.166 265.6);

Tailwind

colors: {
  custom: {
    50: '#909fec',
    500: '#517ae3',
    950: '#000000',
  },
}

SCSS

$custom: #517ae3;
$custom-light: #909fec;
$custom-dark: #000000;

JSON

{
  "hex": "#517ae3",
  "rgb": {
    "r": 81,
    "g": 122,
    "b": 227
  },
  "hsl": {
    "h": 223.151,
    "s": 72.277,
    "l": 60.392
  },
  "oklch": {
    "l": 0.60295,
    "c": 0.16561,
    "h": 265.6
  },
  "luminance": 0.21214
}

Semantic roles & 50–950 ramp

primary

#517AE3

secondary

#E4D4AC

accent

#9E11D4

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #517AE3

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

Preview Lab → · Contrast checker → · Palette generator →