#517CF0#517CF0

#517CF0 is a mid, vivid blue. Relative luminance 0.225; OKLCH L 61.6% C 0.181 H 266.0°. Best body text is #000000 at 5.49:1 contrast (WCAG AA passes).

Color values

HEX	#517CF0
RGB	rgb(81, 124, 240)
HSL	hsl(224, 84%, 63%)
HSV	hsv(224, 66%, 94%)
CMYK	cmyk(66.3%, 48.3%, 0%, 5.9%)
CIE-LAB	lab(54.50, 22.02, -62.86)
CIE-LCH	lch(54.50, 66.60, 289.30°)
OKLab	oklab(61.56% -0.0127 -0.1802)
OKLCH	oklch(61.56% 0.181 266)
XYZ	xyz(26.3237, 22.4534, 85.3678)
Luminance	0.2246 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517CF0 #F0C551

analogous

#51CBF0 #517CF0 #7651F0

triadic

#517CF0 #F0517C #7CF051

tetradic

#517CF0 #F051CB #F0C551 #51F076

square

#517CF0 #F051CB #F0C551 #51F076

split-complementary

#517CF0 #F07651 #CBF051

monochromatic

#103DB7 #1952EB #517CF0 #89A6F5 #C2D1FA

Accessibility & contrast

On white

3.82

#517CF0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.49

#517CF0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517CF0

5.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517CF0	#FFFFFF	#000000	##000000
##517CF0	1.00	3.82	5.49	5.49
#FFFFFF	3.82	1.00	21.00	21.00
#000000	5.49	21.00	1.00	1.00
##000000	5.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D8AF4

Deuteranopia (green-blind)

#107CEE

Tritanopia (blue-blind)

#0097AA

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #517cf0;
/* rgb */ color: rgb(81, 124, 240);
/* oklch */ color: oklch(61.6% 0.181 266.0);

Tailwind

colors: {
  custom: {
    50: '#92a1f6',
    500: '#517cf0',
    950: '#000000',
  },
}

SCSS

$custom: #517cf0;
$custom-light: #92a1f6;
$custom-dark: #000000;

JSON

{
  "hex": "#517cf0",
  "rgb": {
    "r": 81,
    "g": 124,
    "b": 240
  },
  "hsl": {
    "h": 223.774,
    "s": 84.127,
    "l": 62.941
  },
  "oklch": {
    "l": 0.61561,
    "c": 0.18065,
    "h": 266
  },
  "luminance": 0.22456
}

Semantic roles & 50–950 ramp

primary

#517CF0

secondary

#EBDCB2

accent

#A505E1

background

#F9F9FF

surface

#F2F2FE

border

#CCCCD6

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #517CF0

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

Preview Lab → · Contrast checker → · Palette generator →