#517BD5#517BD5
#517BD5 is a mid, vivid blue. Relative luminance 0.207; OKLCH L 59.6% C 0.145 H 263.7°. Best body text is #000000 at 5.14:1 contrast (WCAG AA passes).
Color values
| HEX | #517BD5 |
|---|---|
| RGB | rgb(81, 123, 213) |
| HSL | hsl(221, 61%, 58%) |
| HSV | hsv(221, 62%, 84%) |
| CMYK | cmyk(62%, 42.3%, 0%, 16.5%) |
| CIE-LAB | lab(52.64, 13.37, -50.71) |
| CIE-LCH | lch(52.64, 52.44, 284.77°) |
| OKLab | oklab(59.62% -0.0159 -0.1445) |
| OKLCH | oklch(59.62% 0.145 263.7) |
| XYZ | xyz(22.4824, 20.7173, 65.7519) |
| Luminance | 0.2072 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cornflower Blue
#5170D7
ΔE00 4.09
Lightish Blue
#3D7AFD
ΔE00 4.24
Clear Blue
#247AFD
ΔE00 4.48
Deep Sky Blue
#0D75F8
ΔE00 4.70
Dodger Blue
#3E82FC
ΔE00 4.93
Soft Blue
#6488EA
ΔE00 5.39
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#517BD5 #D5AB51
analogous
#51BDD5 #517BD5 #6951D5
triadic
#517BD5 #D5517B #7BD551
tetradic
#517BD5 #D551BD #D5AB51 #51D569
square
#517BD5 #D551BD #D5AB51 #51D569
split-complementary
#517BD5 #D56951 #BDD551
monochromatic
#21438A #2D5BBC #517BD5 #82A0E1 #B4C6ED
Accessibility & contrast
On white
4.08
#517BD5 on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.14
#517BD5 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #517BD5
5.14:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##517BD5 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##517BD5 | 1.00 | 4.08 | 5.14 | 5.14 |
| #FFFFFF | 4.08 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.14 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.14 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#5284D8
Deuteranopia (green-blind)
#3F78D3
Tritanopia (blue-blind)
#008F9E
Achromatopsia (no color)
#7E7E7E
Design tokens & code
CSS
--color: #517bd5; /* rgb */ color: rgb(81, 123, 213); /* oklch */ color: oklch(59.6% 0.145 263.7);
Tailwind
colors: {
custom: {
50: '#8da0e2',
500: '#517bd5',
950: '#000000',
},
}SCSS
$custom: #517bd5; $custom-light: #8da0e2; $custom-dark: #000000;
JSON
{
"hex": "#517bd5",
"rgb": {
"r": 81,
"g": 123,
"b": 213
},
"hsl": {
"h": 220.909,
"s": 61.111,
"l": 57.647
},
"oklch": {
"l": 0.59616,
"c": 0.14536,
"h": 263.7
},
"luminance": 0.20719
}Semantic roles & 50–950 ramp
primary
#517BD5
secondary
#DBCBA6
accent
#B144E4
background
#F9F9FD
surface
#F1F2FB
border
#CBCCD4
text
#0D0E15
muted
#7E7E83