#517ADE#517ADE

#517ADE is a mid, vivid blue. Relative luminance 0.209; OKLCH L 60.0% C 0.159 H 265.2°. Best body text is #000000 at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#517ADE
RGB	rgb(81, 122, 222)
HSL	hsl(223, 68%, 59%)
HSV	hsv(223, 64%, 87%)
CMYK	cmyk(63.5%, 45%, 0%, 12.9%)
CIE-LAB	lab(52.88, 17.05, -55.39)
CIE-LCH	lch(52.88, 57.96, 287.11°)
OKLab	oklab(59.97% -0.0133 -0.1583)
OKLCH	oklch(59.97% 0.159 265.2)
XYZ	xyz(23.5331, 20.9402, 71.8948)
Luminance	0.2094 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517ADE #DEB551

analogous

#51C1DE #517ADE #6F51DE

triadic

#517ADE #DE517A #7ADE51

tetradic

#517ADE #DE51C1 #DEB551 #51DE6F

square

#517ADE #DE51C1 #DEB551 #51DE6F

split-complementary

#517ADE #DE6F51 #C1DE51

monochromatic

#1D4198 #2756CB #517ADE #84A1E8 #B8C9F2

Accessibility & contrast

On white

4.05

#517ADE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.19

#517ADE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517ADE

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517ADE	#FFFFFF	#000000	##000000
##517ADE	1.00	4.05	5.19	5.19
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.19	21.00	1.00	1.00
##000000	5.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A85E2

Deuteranopia (green-blind)

#3178DC

Tritanopia (blue-blind)

#0091A1

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #517ade;
/* rgb */ color: rgb(81, 122, 222);
/* oklch */ color: oklch(60.0% 0.159 265.2);

Tailwind

colors: {
  custom: {
    50: '#8f9fe9',
    500: '#517ade',
    950: '#000000',
  },
}

SCSS

$custom: #517ade;
$custom-light: #8f9fe9;
$custom-dark: #000000;

JSON

{
  "hex": "#517ade",
  "rgb": {
    "r": 81,
    "g": 122,
    "b": 222
  },
  "hsl": {
    "h": 222.553,
    "s": 68.116,
    "l": 59.412
  },
  "oklch": {
    "l": 0.59972,
    "c": 0.15883,
    "h": 265.2
  },
  "luminance": 0.20942
}

Semantic roles & 50–950 ramp

primary

#517ADE

secondary

#E1D1AA

accent

#B83DEB

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #517ADE

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

Preview Lab → · Contrast checker → · Palette generator →