#518EF3#518EF3

#518EF3 is a light, vivid blue. Relative luminance 0.276; OKLCH L 65.4% C 0.164 H 259.9°. Best body text is #000000 at 6.51:1 contrast (WCAG AA passes).

Color values

HEX	#518EF3
RGB	rgb(81, 142, 243)
HSL	hsl(217, 87%, 64%)
HSV	hsv(217, 67%, 95%)
CMYK	cmyk(66.7%, 41.6%, 0%, 4.7%)
CIE-LAB	lab(59.49, 12.13, -56.53)
CIE-LCH	lch(59.49, 57.81, 282.11°)
OKLab	oklab(65.45% -0.0286 -0.1613)
OKLCH	oklch(65.45% 0.164 259.9)
XYZ	xyz(29.2382, 27.5635, 88.5560)
Luminance	0.2757 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#518EF3 #F3B651

analogous

#51DFF3 #518EF3 #6551F3

triadic

#518EF3 #F3518E #8EF351

tetradic

#518EF3 #F351DF #F3B651 #51F365

square

#518EF3 #F351DF #F3B651 #51F365

split-complementary

#518EF3 #F36551 #DFF351

monochromatic

#0D4FBD #1869EF #518EF3 #8AB3F7 #C4D8FB

Accessibility & contrast

On white

3.22

#518EF3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.51

#518EF3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #518EF3

6.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##518EF3	#FFFFFF	#000000	##000000
##518EF3	1.00	3.22	6.51	6.51
#FFFFFF	3.22	1.00	21.00	21.00
#000000	6.51	21.00	1.00	1.00
##000000	6.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F97F7

Deuteranopia (green-blind)

#4588F1

Tritanopia (blue-blind)

#00A5B5

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #518ef3;
/* rgb */ color: rgb(81, 142, 243);
/* oklch */ color: oklch(65.4% 0.164 259.9);

Tailwind

colors: {
  custom: {
    50: '#92aef7',
    500: '#518ef3',
    950: '#000000',
  },
}

SCSS

$custom: #518ef3;
$custom-light: #92aef7;
$custom-dark: #000000;

JSON

{
  "hex": "#518ef3",
  "rgb": {
    "r": 81,
    "g": 142,
    "b": 243
  },
  "hsl": {
    "h": 217.407,
    "s": 87.097,
    "l": 63.529
  },
  "oklch": {
    "l": 0.65448,
    "c": 0.16384,
    "h": 259.9
  },
  "luminance": 0.27566
}

Semantic roles & 50–950 ramp

primary

#518EF3

secondary

#EDD7B3

accent

#8F02E4

background

#F9FAFF

surface

#F2F4FF

border

#CCCED7

text

#0E1017

muted

#7E7F85

Preview Lab

Preview with #518EF3

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

Preview Lab → · Contrast checker → · Palette generator →