#517ED0#517ED0
#517ED0 is a mid, vivid blue. Relative luminance 0.212; OKLCH L 60.0% C 0.135 H 261.5°. Best body text is #000000 at 5.24:1 contrast (WCAG AA passes).
Color values
| HEX | #517ED0 |
|---|---|
| RGB | rgb(81, 126, 208) |
| HSL | hsl(219, 57%, 57%) |
| HSV | hsv(219, 61%, 82%) |
| CMYK | cmyk(61.1%, 39.4%, 0%, 18.4%) |
| CIE-LAB | lab(53.19, 9.84, -46.99) |
| CIE-LCH | lch(53.19, 48.01, 281.83°) |
| OKLab | oklab(59.96% -0.02 -0.1336) |
| OKLCH | oklch(59.96% 0.135 261.5) |
| XYZ | xyz(22.2354, 21.2231, 62.5870) |
| Luminance | 0.2122 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Clear Blue
#247AFD
ΔE00 4.69
Dodger Blue
#3E82FC
ΔE00 4.73
Lightish Blue
#3D7AFD
ΔE00 4.75
Windows Blue
#3778BF
ΔE00 4.96
Off Blue
#5684AE
ΔE00 5.01
Deep Sky Blue
#0D75F8
ΔE00 5.10
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#517ED0 #D0A351
analogous
#51BED0 #517ED0 #6451D0
triadic
#517ED0 #D0517E #7ED051
tetradic
#517ED0 #D051BE #D0A351 #51D064
square
#517ED0 #D051BE #D0A351 #51D064
split-complementary
#517ED0 #D06451 #BED051
monochromatic
#234583 #305FB3 #517ED0 #81A2DD #B1C5EA
Accessibility & contrast
On white
4.00
#517ED0 on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.24
#517ED0 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #517ED0
5.24:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##517ED0 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##517ED0 | 1.00 | 4.00 | 5.24 | 5.24 |
| #FFFFFF | 4.00 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.24 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.24 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#5A85D3
Deuteranopia (green-blind)
#497ACE
Tritanopia (blue-blind)
#00909D
Achromatopsia (no color)
#7F7F7F
Design tokens & code
CSS
--color: #517ed0; /* rgb */ color: rgb(81, 126, 208); /* oklch */ color: oklch(60.0% 0.135 261.5);
Tailwind
colors: {
custom: {
50: '#8da3df',
500: '#517ed0',
950: '#000000',
},
}SCSS
$custom: #517ed0; $custom-light: #8da3df; $custom-dark: #000000;
JSON
{
"hex": "#517ed0",
"rgb": {
"r": 81,
"g": 126,
"b": 208
},
"hsl": {
"h": 218.74,
"s": 57.466,
"l": 56.667
},
"oklch": {
"l": 0.59955,
"c": 0.13506,
"h": 261.5
},
"luminance": 0.21225
}Semantic roles & 50–950 ramp
primary
#517ED0
secondary
#D8C6A4
accent
#AA47E1
background
#F9F9FD
surface
#F1F2FB
border
#CBCCD4
text
#0D0F15
muted
#7E7E83