#517AE4#517AE4

#517AE4 is a mid, vivid blue. Relative luminance 0.213; OKLCH L 60.4% C 0.167 H 265.7°. Best body text is #000000 at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#517AE4
RGB	rgb(81, 122, 228)
HSL	hsl(223, 73%, 61%)
HSV	hsv(223, 64%, 89%)
CMYK	cmyk(64.5%, 46.5%, 0%, 10.6%)
CIE-LAB	lab(53.24, 19.11, -58.19)
CIE-LCH	lch(53.24, 61.25, 288.18°)
OKLab	oklab(60.36% -0.0124 -0.1665)
OKLCH	oklch(60.36% 0.167 265.7)
XYZ	xyz(24.3516, 21.2676, 76.2055)
Luminance	0.2127 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517AE4 #E4BB51

analogous

#51C4E4 #517AE4 #7151E4

triadic

#517AE4 #E4517A #7AE451

tetradic

#517AE4 #E451C4 #E4BB51 #51E471

square

#517AE4 #E451C4 #E4BB51 #51E471

split-complementary

#517AE4 #E47151 #C4E451

monochromatic

#193FA2 #2154D7 #517AE4 #86A2EC #BBCBF4

Accessibility & contrast

On white

4.00

#517AE4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.25

#517AE4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517AE4

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517AE4	#FFFFFF	#000000	##000000
##517AE4	1.00	4.00	5.25	5.25
#FFFFFF	4.00	1.00	21.00	21.00
#000000	5.25	21.00	1.00	1.00
##000000	5.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4486E8

Deuteranopia (green-blind)

#2879E2

Tritanopia (blue-blind)

#0092A4

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #517ae4;
/* rgb */ color: rgb(81, 122, 228);
/* oklch */ color: oklch(60.4% 0.167 265.7);

Tailwind

colors: {
  custom: {
    50: '#909fed',
    500: '#517ae4',
    950: '#000000',
  },
}

SCSS

$custom: #517ae4;
$custom-light: #909fed;
$custom-dark: #000000;

JSON

{
  "hex": "#517ae4",
  "rgb": {
    "r": 81,
    "g": 122,
    "b": 228
  },
  "hsl": {
    "h": 223.265,
    "s": 73.134,
    "l": 60.588
  },
  "oklch": {
    "l": 0.60361,
    "c": 0.16695,
    "h": 265.7
  },
  "luminance": 0.2127
}

Semantic roles & 50–950 ramp

primary

#517AE4

secondary

#E4D5AC

accent

#9E10D5

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #517AE4

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

Preview Lab → · Contrast checker → · Palette generator →