#518FEF#518FEF

#518FEF is a light, vivid blue. Relative luminance 0.276; OKLCH L 65.4% C 0.158 H 258.9°. Best body text is #000000 at 6.53:1 contrast (WCAG AA passes).

Color values

HEX	#518FEF
RGB	rgb(81, 143, 239)
HSL	hsl(216, 83%, 63%)
HSV	hsv(216, 66%, 94%)
CMYK	cmyk(66.1%, 40.2%, 0%, 6.3%)
CIE-LAB	lab(59.55, 10.16, -54.23)
CIE-LCH	lch(59.55, 55.18, 280.61°)
OKLab	oklab(65.42% -0.0304 -0.1546)
OKLCH	oklch(65.42% 0.158 258.9)
XYZ	xyz(28.7902, 27.6234, 85.4592)
Luminance	0.2763 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#518FEF #EFB151

analogous

#51DEEF #518FEF #6251EF

triadic

#518FEF #EF518F #8FEF51

tetradic

#518FEF #EF51DE #EFB151 #51EF62

square

#518FEF #EF51DE #EFB151 #51EF62

split-complementary

#518FEF #EF6251 #DEEF51

monochromatic

#1151B5 #196BEA #518FEF #89B3F4 #C1D7F9

Accessibility & contrast

On white

3.22

#518FEF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.53

#518FEF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #518FEF

6.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##518FEF	#FFFFFF	#000000	##000000
##518FEF	1.00	3.22	6.53	6.53
#FFFFFF	3.22	1.00	21.00	21.00
#000000	6.53	21.00	1.00	1.00
##000000	6.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6397F3

Deuteranopia (green-blind)

#4B89ED

Tritanopia (blue-blind)

#00A5B3

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #518fef;
/* rgb */ color: rgb(81, 143, 239);
/* oklch */ color: oklch(65.4% 0.158 258.9);

Tailwind

colors: {
  custom: {
    50: '#91aff5',
    500: '#518fef',
    950: '#000000',
  },
}

SCSS

$custom: #518fef;
$custom-light: #91aff5;
$custom-dark: #000000;

JSON

{
  "hex": "#518fef",
  "rgb": {
    "r": 81,
    "g": 143,
    "b": 239
  },
  "hsl": {
    "h": 216.456,
    "s": 83.158,
    "l": 62.745
  },
  "oklch": {
    "l": 0.6542,
    "c": 0.15753,
    "h": 258.9
  },
  "luminance": 0.27626
}

Semantic roles & 50–950 ramp

primary

#518FEF

secondary

#EAD4B1

accent

#8A06E0

background

#F9FAFF

surface

#F2F4FE

border

#CCCED6

text

#0E1017

muted

#7E7F85

Preview Lab

Preview with #518FEF

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

Preview Lab → · Contrast checker → · Palette generator →