#516DB5#516DB5
#516DB5 is a mid, moderate blue. Relative luminance 0.160; OKLCH L 54.7% C 0.117 H 266.5°. Best body text is #FFFFFF at 4.99:1 contrast (WCAG AA passes).
Color values
| HEX | #516DB5 |
|---|---|
| RGB | rgb(81, 109, 181) |
| HSL | hsl(223, 40%, 51%) |
| HSV | hsv(223, 55%, 71%) |
| CMYK | cmyk(55.2%, 39.8%, 0%, 29%) |
| CIE-LAB | lab(47.00, 11.25, -41.33) |
| CIE-LCH | lch(47.00, 42.83, 285.23°) |
| OKLab | oklab(54.7% -0.0071 -0.1172) |
| OKLCH | oklch(54.7% 0.117 266.5) |
| XYZ | xyz(17.1997, 16.0215, 45.8932) |
| Luminance | 0.1602 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
French Blue
#436BAD
ΔE00 2.94
Cornflower Blue
#5170D7
ΔE00 4.56
Royal Blue
#4169E1
ΔE00 5.61
Medium Blue
#2C6FBB
ΔE00 5.94
Cadet Blue
#4E7496
ΔE00 6.20
Flat Blue
#3C73A8
ΔE00 6.26
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#516DB5 #B59951
analogous
#519FB5 #516DB5 #6751B5
triadic
#516DB5 #B5516D #6DB551
tetradic
#516DB5 #B5519F #B59951 #51B567
square
#516DB5 #B5519F #B59951 #51B567
split-complementary
#516DB5 #B56751 #9FB551
monochromatic
#2A3962 #3C538D #516DB5 #7C91C7 #A7B5DA
Accessibility & contrast
On white
4.99
#516DB5 on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
4.20
#516DB5 on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #516DB5
4.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##516DB5 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##516DB5 | 1.00 | 4.99 | 4.20 | 4.99 |
| #FFFFFF | 4.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 4.20 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 4.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#4F74B8
Deuteranopia (green-blind)
#436BB3
Tritanopia (blue-blind)
#187D88
Achromatopsia (no color)
#6F6F6F
Design tokens & code
CSS
--color: #516db5; /* rgb */ color: rgb(81, 109, 181); /* oklch */ color: oklch(54.7% 0.117 266.5);
Tailwind
colors: {
custom: {
50: '#8996cb',
500: '#516db5',
950: '#000000',
},
}SCSS
$custom: #516db5; $custom-light: #8996cb; $custom-dark: #000000;
JSON
{
"hex": "#516db5",
"rgb": {
"r": 81,
"g": 109,
"b": 181
},
"hsl": {
"h": 223.2,
"s": 40.323,
"l": 51.373
},
"oklch": {
"l": 0.54699,
"c": 0.11737,
"h": 266.5
},
"luminance": 0.16023
}Semantic roles & 50–950 ramp
primary
#516DB5
secondary
#C7BB9B
accent
#AE58D0
background
#F8F9FC
surface
#F0F1F8
border
#CBCBD1
text
#0C0D13
muted
#7D7E82