#517CDA#517CDA
#517CDA is a mid, vivid blue. Relative luminance 0.212; OKLCH L 60.1% C 0.151 H 263.9°. Best body text is #000000 at 5.25:1 contrast (WCAG AA passes).
Color values
| HEX | #517CDA |
|---|---|
| RGB | rgb(81, 124, 218) |
| HSL | hsl(221, 65%, 59%) |
| HSV | hsv(221, 63%, 85%) |
| CMYK | cmyk(62.8%, 43.1%, 0%, 14.5%) |
| CIE-LAB | lab(53.19, 14.46, -52.64) |
| CIE-LCH | lch(53.19, 54.59, 285.36°) |
| OKLab | oklab(60.14% -0.016 -0.1502) |
| OKLCH | oklch(60.14% 0.151 263.9) |
| XYZ | xyz(23.2515, 21.2245, 69.1875) |
| Luminance | 0.2123 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Lightish Blue
#3D7AFD
ΔE00 3.71
Clear Blue
#247AFD
ΔE00 4.07
Dodger Blue
#3E82FC
ΔE00 4.31
Cornflower Blue
#5170D7
ΔE00 4.42
Deep Sky Blue
#0D75F8
ΔE00 4.54
Soft Blue
#6488EA
ΔE00 4.83
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#517CDA #DAAF51
analogous
#51C0DA #517CDA #6A51DA
triadic
#517CDA #DA517C #7CDA51
tetradic
#517CDA #DA51C0 #DAAF51 #51DA6A
square
#517CDA #DA51C0 #DAAF51 #51DA6A
split-complementary
#517CDA #DA6A51 #C0DA51
monochromatic
#1F4392 #2A5AC4 #517CDA #83A2E5 #B6C8EF
Accessibility & contrast
On white
4.00
#517CDA on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.25
#517CDA on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #517CDA
5.25:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##517CDA | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##517CDA | 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)
#5086DE
Deuteranopia (green-blind)
#3B79D8
Tritanopia (blue-blind)
#0091A0
Achromatopsia (no color)
#7F7F7F
Design tokens & code
CSS
--color: #517cda; /* rgb */ color: rgb(81, 124, 218); /* oklch */ color: oklch(60.1% 0.151 263.9);
Tailwind
colors: {
custom: {
50: '#8ea1e6',
500: '#517cda',
950: '#000000',
},
}SCSS
$custom: #517cda; $custom-light: #8ea1e6; $custom-dark: #000000;
JSON
{
"hex": "#517cda",
"rgb": {
"r": 81,
"g": 124,
"b": 218
},
"hsl": {
"h": 221.168,
"s": 64.929,
"l": 58.627
},
"oklch": {
"l": 0.60136,
"c": 0.15101,
"h": 263.9
},
"luminance": 0.21227
}Semantic roles & 50–950 ramp
primary
#517CDA
secondary
#DECDA8
accent
#B340E8
background
#F9F9FE
surface
#F2F2FC
border
#CCCCD5
text
#0D0E16
muted
#7E7E84