#517FEF#517FEF

#517FEF is a light, vivid blue. Relative luminance 0.232; OKLCH L 62.1% C 0.176 H 264.9°. Best body text is #000000 at 5.63:1 contrast (WCAG AA passes).

Color values

HEX	#517FEF
RGB	rgb(81, 127, 239)
HSL	hsl(223, 83%, 63%)
HSV	hsv(223, 66%, 94%)
CMYK	cmyk(66.1%, 46.9%, 0%, 6.3%)
CIE-LAB	lab(55.23, 19.83, -61.13)
CIE-LCH	lch(55.23, 64.27, 287.98°)
OKLab	oklab(62.1% -0.0155 -0.1751)
OKLCH	oklch(62.1% 0.176 264.9)
XYZ	xyz(26.5573, 23.1575, 84.7149)
Luminance	0.2316 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517FEF #EFC151

analogous

#51CEEF #517FEF #7251EF

triadic

#517FEF #EF517F #7FEF51

tetradic

#517FEF #EF51CE #EFC151 #51EF72

square

#517FEF #EF51CE #EFC151 #51EF72

split-complementary

#517FEF #EF7251 #CEEF51

monochromatic

#1140B5 #1956EA #517FEF #89A8F4 #C1D1F9

Accessibility & contrast

On white

3.73

#517FEF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.63

#517FEF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517FEF

5.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517FEF	#FFFFFF	#000000	##000000
##517FEF	1.00	3.73	5.63	5.63
#FFFFFF	3.73	1.00	21.00	21.00
#000000	5.63	21.00	1.00	1.00
##000000	5.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#458CF3

Deuteranopia (green-blind)

#227DED

Tritanopia (blue-blind)

#0099AB

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #517fef;
/* rgb */ color: rgb(81, 127, 239);
/* oklch */ color: oklch(62.1% 0.176 264.9);

Tailwind

colors: {
  custom: {
    50: '#92a3f5',
    500: '#517fef',
    950: '#000000',
  },
}

SCSS

$custom: #517fef;
$custom-light: #92a3f5;
$custom-dark: #000000;

JSON

{
  "hex": "#517fef",
  "rgb": {
    "r": 81,
    "g": 127,
    "b": 239
  },
  "hsl": {
    "h": 222.532,
    "s": 83.158,
    "l": 62.745
  },
  "oklch": {
    "l": 0.62098,
    "c": 0.17576,
    "h": 264.9
  },
  "luminance": 0.2316
}

Semantic roles & 50–950 ramp

primary

#517FEF

secondary

#EADAB1

accent

#A006E0

background

#F9FAFF

surface

#F2F3FE

border

#CCCDD6

text

#0E0F17

muted

#7E7F85

Preview Lab

Preview with #517FEF

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

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