#517EE1#517EE1

#517EE1 is a mid, vivid blue. Relative luminance 0.221; OKLCH L 61.0% C 0.158 H 263.9°. Best body text is #000000 at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#517EE1
RGB	rgb(81, 126, 225)
HSL	hsl(221, 71%, 60%)
HSV	hsv(221, 64%, 88%)
CMYK	cmyk(64%, 44%, 0%, 11.8%)
CIE-LAB	lab(54.14, 15.63, -55.07)
CIE-LCH	lch(54.14, 57.25, 285.84°)
OKLab	oklab(60.99% -0.0167 -0.1573)
OKLCH	oklch(60.99% 0.158 263.9)
XYZ	xyz(24.4401, 22.1050, 74.1983)
Luminance	0.2211 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517EE1 #E1B451

analogous

#51C6E1 #517EE1 #6C51E1

triadic

#517EE1 #E1517E #7EE151

tetradic

#517EE1 #E151C6 #E1B451 #51E16C

square

#517EE1 #E151C6 #E1B451 #51E16C

split-complementary

#517EE1 #E16C51 #C6E151

monochromatic

#1B449D #245AD1 #517EE1 #85A5EA #B9CBF3

Accessibility & contrast

On white

3.87

#517EE1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.42

#517EE1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517EE1

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517EE1	#FFFFFF	#000000	##000000
##517EE1	1.00	3.87	5.42	5.42
#FFFFFF	3.87	1.00	21.00	21.00
#000000	5.42	21.00	1.00	1.00
##000000	5.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F88E5

Deuteranopia (green-blind)

#377BDF

Tritanopia (blue-blind)

#0095A4

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #517ee1;
/* rgb */ color: rgb(81, 126, 225);
/* oklch */ color: oklch(61.0% 0.158 263.9);

Tailwind

colors: {
  custom: {
    50: '#8fa2eb',
    500: '#517ee1',
    950: '#000000',
  },
}

SCSS

$custom: #517ee1;
$custom-light: #8fa2eb;
$custom-dark: #000000;

JSON

{
  "hex": "#517ee1",
  "rgb": {
    "r": 81,
    "g": 126,
    "b": 225
  },
  "hsl": {
    "h": 221.25,
    "s": 70.588,
    "l": 60
  },
  "oklch": {
    "l": 0.60991,
    "c": 0.15816,
    "h": 263.9
  },
  "luminance": 0.22107
}

Semantic roles & 50–950 ramp

primary

#517EE1

secondary

#E3D1AB

accent

#B53AED

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0F16

muted

#7E7E84

Preview Lab

Preview with #517EE1

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

Preview Lab → · Contrast checker → · Palette generator →