#517CEE#517CEE

#517CEE is a mid, vivid blue. Relative luminance 0.223; OKLCH L 61.4% C 0.178 H 265.8°. Best body text is #000000 at 5.47:1 contrast (WCAG AA passes).

Color values

HEX	#517CEE
RGB	rgb(81, 124, 238)
HSL	hsl(224, 82%, 63%)
HSV	hsv(224, 66%, 93%)
CMYK	cmyk(66%, 47.9%, 0%, 6.7%)
CIE-LAB	lab(54.38, 21.33, -61.95)
CIE-LCH	lch(54.38, 65.51, 289.00°)
OKLab	oklab(61.43% -0.0129 -0.1775)
OKLCH	oklch(61.43% 0.178 265.8)
XYZ	xyz(26.0282, 22.3352, 83.8118)
Luminance	0.2234 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517CEE #EEC351

analogous

#51CAEE #517CEE #7551EE

triadic

#517CEE #EE517C #7CEE51

tetradic

#517CEE #EE51CA #EEC351 #51EE75

square

#517CEE #EE51CA #EEC351 #51EE75

split-complementary

#517CEE #EE7551 #CAEE51

monochromatic

#113EB3 #1952E9 #517CEE #89A6F3 #C1D0F9

Accessibility & contrast

On white

3.84

#517CEE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.47

#517CEE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517CEE

5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517CEE	#FFFFFF	#000000	##000000
##517CEE	1.00	3.84	5.47	5.47
#FFFFFF	3.84	1.00	21.00	21.00
#000000	5.47	21.00	1.00	1.00
##000000	5.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F8AF2

Deuteranopia (green-blind)

#177BEC

Tritanopia (blue-blind)

#0097AA

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #517cee;
/* rgb */ color: rgb(81, 124, 238);
/* oklch */ color: oklch(61.4% 0.178 265.8);

Tailwind

colors: {
  custom: {
    50: '#91a1f4',
    500: '#517cee',
    950: '#000000',
  },
}

SCSS

$custom: #517cee;
$custom-light: #91a1f4;
$custom-dark: #000000;

JSON

{
  "hex": "#517cee",
  "rgb": {
    "r": 81,
    "g": 124,
    "b": 238
  },
  "hsl": {
    "h": 223.567,
    "s": 82.199,
    "l": 62.549
  },
  "oklch": {
    "l": 0.61427,
    "c": 0.17798,
    "h": 265.8
  },
  "luminance": 0.22338
}

Semantic roles & 50–950 ramp

primary

#517CEE

secondary

#EADAB1

accent

#A407DF

background

#F9F9FF

surface

#F2F2FE

border

#CCCCD6

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #517CEE

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

Preview Lab → · Contrast checker → · Palette generator →