#517AF0#517AF0

#517AF0 is a mid, vivid blue. Relative luminance 0.220; OKLCH L 61.2% C 0.183 H 266.6°. Best body text is #000000 at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#517AF0
RGB	rgb(81, 122, 240)
HSL	hsl(225, 84%, 63%)
HSV	hsv(225, 66%, 94%)
CMYK	cmyk(66.3%, 49.2%, 0%, 5.9%)
CIE-LAB	lab(53.98, 23.24, -63.70)
CIE-LCH	lch(53.98, 67.81, 290.05°)
OKLab	oklab(61.16% -0.0109 -0.1827)
OKLCH	oklch(61.16% 0.183 266.6)
XYZ	xyz(26.0756, 21.9572, 85.2851)
Luminance	0.2196 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517AF0 #F0C751

analogous

#51CAF0 #517AF0 #7751F0

triadic

#517AF0 #F0517A #7AF051

tetradic

#517AF0 #F051CA #F0C751 #51F077

square

#517AF0 #F051CA #F0C751 #51F077

split-complementary

#517AF0 #F07751 #CAF051

monochromatic

#103BB7 #194FEB #517AF0 #89A5F5 #C2D0FA

Accessibility & contrast

On white

3.89

#517AF0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.39

#517AF0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517AF0

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517AF0	#FFFFFF	#000000	##000000
##517AF0	1.00	3.89	5.39	5.39
#FFFFFF	3.89	1.00	21.00	21.00
#000000	5.39	21.00	1.00	1.00
##000000	5.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3789F4

Deuteranopia (green-blind)

#007AEE

Tritanopia (blue-blind)

#0096AA

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #517af0;
/* rgb */ color: rgb(81, 122, 240);
/* oklch */ color: oklch(61.2% 0.183 266.6);

Tailwind

colors: {
  custom: {
    50: '#929ff6',
    500: '#517af0',
    950: '#000000',
  },
}

SCSS

$custom: #517af0;
$custom-light: #929ff6;
$custom-dark: #000000;

JSON

{
  "hex": "#517af0",
  "rgb": {
    "r": 81,
    "g": 122,
    "b": 240
  },
  "hsl": {
    "h": 224.528,
    "s": 84.127,
    "l": 62.941
  },
  "oklch": {
    "l": 0.61163,
    "c": 0.18304,
    "h": 266.6
  },
  "luminance": 0.2196
}

Semantic roles & 50–950 ramp

primary

#517AF0

secondary

#EBDCB2

accent

#A805E1

background

#F9F9FF

surface

#F2F2FE

border

#CCCCD6

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #517AF0

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

Preview Lab → · Contrast checker → · Palette generator →