#517EE9#517EE9

#517EE9 is a mid, vivid blue. Relative luminance 0.226; OKLCH L 61.5% C 0.169 H 264.7°. Best body text is #000000 at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#517EE9
RGB	rgb(81, 126, 233)
HSL	hsl(222, 78%, 62%)
HSV	hsv(222, 65%, 91%)
CMYK	cmyk(65.2%, 45.9%, 0%, 8.6%)
CIE-LAB	lab(54.61, 18.38, -58.79)
CIE-LCH	lch(54.61, 61.60, 287.36°)
OKLab	oklab(61.5% -0.0155 -0.1682)
OKLCH	oklch(61.5% 0.169 264.7)
XYZ	xyz(25.5570, 22.5518, 80.0811)
Luminance	0.2255 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517EE9 #E9BC51

analogous

#51CAE9 #517EE9 #7051E9

triadic

#517EE9 #E9517E #7EE951

tetradic

#517EE9 #E951CA #E9BC51 #51E970

square

#517EE9 #E951CA #E9BC51 #51E970

split-complementary

#517EE9 #E97051 #CAE951

monochromatic

#1641AA #1C56E0 #517EE9 #87A6F0 #BECFF7

Accessibility & contrast

On white

3.81

#517EE9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.51

#517EE9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517EE9

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517EE9	#FFFFFF	#000000	##000000
##517EE9	1.00	3.81	5.51	5.51
#FFFFFF	3.81	1.00	21.00	21.00
#000000	5.51	21.00	1.00	1.00
##000000	5.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#488AED

Deuteranopia (green-blind)

#2B7CE7

Tritanopia (blue-blind)

#0097A8

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #517ee9;
/* rgb */ color: rgb(81, 126, 233);
/* oklch */ color: oklch(61.5% 0.169 264.7);

Tailwind

colors: {
  custom: {
    50: '#91a2f1',
    500: '#517ee9',
    950: '#000000',
  },
}

SCSS

$custom: #517ee9;
$custom-light: #91a2f1;
$custom-dark: #000000;

JSON

{
  "hex": "#517ee9",
  "rgb": {
    "r": 81,
    "g": 126,
    "b": 233
  },
  "hsl": {
    "h": 222.237,
    "s": 77.551,
    "l": 61.569
  },
  "oklch": {
    "l": 0.61503,
    "c": 0.16892,
    "h": 264.7
  },
  "luminance": 0.22554
}

Semantic roles & 50–950 ramp

primary

#517EE9

secondary

#E7D6AF

accent

#9D0CDA

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0F17

muted

#7E7E85

Preview Lab

Preview with #517EE9

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

Preview Lab → · Contrast checker → · Palette generator →