#517FEE#517FEE

#517FEE is a light, vivid blue. Relative luminance 0.231; OKLCH L 62.0% C 0.174 H 264.8°. Best body text is #000000 at 5.62:1 contrast (WCAG AA passes).

Color values

HEX	#517FEE
RGB	rgb(81, 127, 238)
HSL	hsl(222, 82%, 63%)
HSV	hsv(222, 66%, 93%)
CMYK	cmyk(66%, 46.6%, 0%, 6.7%)
CIE-LAB	lab(55.17, 19.49, -60.67)
CIE-LCH	lch(55.17, 63.73, 287.81°)
OKLab	oklab(62.03% -0.0157 -0.1737)
OKLCH	oklch(62.03% 0.174 264.8)
XYZ	xyz(26.4099, 23.0986, 83.9390)
Luminance	0.2310 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517FEE #EEC051

analogous

#51CEEE #517FEE #7151EE

triadic

#517FEE #EE517F #7FEE51

tetradic

#517FEE #EE51CE #EEC051 #51EE71

square

#517FEE #EE51CE #EEC051 #51EE71

split-complementary

#517FEE #EE7151 #CEEE51

monochromatic

#1141B3 #1956E9 #517FEE #89A8F3 #C1D1F9

Accessibility & contrast

On white

3.74

#517FEE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.62

#517FEE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517FEE

5.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517FEE	#FFFFFF	#000000	##000000
##517FEE	1.00	3.74	5.62	5.62
#FFFFFF	3.74	1.00	21.00	21.00
#000000	5.62	21.00	1.00	1.00
##000000	5.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#468CF2

Deuteranopia (green-blind)

#247DEC

Tritanopia (blue-blind)

#0099AB

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #517fee;
/* rgb */ color: rgb(81, 127, 238);
/* oklch */ color: oklch(62.0% 0.174 264.8);

Tailwind

colors: {
  custom: {
    50: '#91a3f4',
    500: '#517fee',
    950: '#000000',
  },
}

SCSS

$custom: #517fee;
$custom-light: #91a3f4;
$custom-dark: #000000;

JSON

{
  "hex": "#517fee",
  "rgb": {
    "r": 81,
    "g": 127,
    "b": 238
  },
  "hsl": {
    "h": 222.42,
    "s": 82.199,
    "l": 62.549
  },
  "oklch": {
    "l": 0.62033,
    "c": 0.17442,
    "h": 264.8
  },
  "luminance": 0.23101
}

Semantic roles & 50–950 ramp

primary

#517FEE

secondary

#EAD9B1

accent

#9F07DF

background

#F9FAFF

surface

#F2F3FE

border

#CCCDD6

text

#0E0F17

muted

#7E7F85

Preview Lab

Preview with #517FEE

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

Preview Lab → · Contrast checker → · Palette generator →