#517EE4#517EE4

#517EE4 is a mid, vivid blue. Relative luminance 0.223; OKLCH L 61.2% C 0.162 H 264.3°. Best body text is #000000 at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#517EE4
RGB	rgb(81, 126, 228)
HSL	hsl(222, 73%, 61%)
HSV	hsv(222, 64%, 89%)
CMYK	cmyk(64.5%, 44.7%, 0%, 10.6%)
CIE-LAB	lab(54.31, 16.66, -56.47)
CIE-LCH	lch(54.31, 58.88, 286.44°)
OKLab	oklab(61.18% -0.0162 -0.1614)
OKLCH	oklch(61.18% 0.162 264.3)
XYZ	xyz(24.8529, 22.2701, 76.3726)
Luminance	0.2227 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517EE4 #E4B751

analogous

#51C7E4 #517EE4 #6E51E4

triadic

#517EE4 #E4517E #7EE451

tetradic

#517EE4 #E451C7 #E4B751 #51E46E

square

#517EE4 #E451C7 #E4B751 #51E46E

split-complementary

#517EE4 #E46E51 #C7E451

monochromatic

#1943A2 #2159D7 #517EE4 #86A5EC #BBCDF4

Accessibility & contrast

On white

3.85

#517EE4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.45

#517EE4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517EE4

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517EE4	#FFFFFF	#000000	##000000
##517EE4	1.00	3.85	5.45	5.45
#FFFFFF	3.85	1.00	21.00	21.00
#000000	5.45	21.00	1.00	1.00
##000000	5.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C89E8

Deuteranopia (green-blind)

#337CE2

Tritanopia (blue-blind)

#0095A6

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #517ee4;
/* rgb */ color: rgb(81, 126, 228);
/* oklch */ color: oklch(61.2% 0.162 264.3);

Tailwind

colors: {
  custom: {
    50: '#90a2ed',
    500: '#517ee4',
    950: '#000000',
  },
}

SCSS

$custom: #517ee4;
$custom-light: #90a2ed;
$custom-dark: #000000;

JSON

{
  "hex": "#517ee4",
  "rgb": {
    "r": 81,
    "g": 126,
    "b": 228
  },
  "hsl": {
    "h": 221.633,
    "s": 73.134,
    "l": 60.588
  },
  "oklch": {
    "l": 0.61181,
    "c": 0.16221,
    "h": 264.3
  },
  "luminance": 0.22272
}

Semantic roles & 50–950 ramp

primary

#517EE4

secondary

#E4D3AC

accent

#9910D5

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0F16

muted

#7E7E84

Preview Lab

Preview with #517EE4

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

Preview Lab → · Contrast checker → · Palette generator →