#566FBB#566FBB
#566FBB is a mid, vivid blue. Relative luminance 0.169; OKLCH L 55.8% C 0.122 H 268.5°. Best body text is #FFFFFF at 4.79:1 contrast (WCAG AA passes).
Color values
| HEX | #566FBB |
|---|---|
| RGB | rgb(86, 111, 187) |
| HSL | hsl(225, 43%, 54%) |
| HSV | hsv(225, 54%, 73%) |
| CMYK | cmyk(54%, 40.6%, 0%, 26.7%) |
| CIE-LAB | lab(48.18, 13.09, -42.93) |
| CIE-LCH | lch(48.18, 44.88, 286.95°) |
| OKLab | oklab(55.79% -0.0031 -0.1217) |
| OKLCH | oklch(55.79% 0.122 268.5) |
| XYZ | xyz(18.4889, 16.9338, 49.2984) |
| Luminance | 0.1694 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cornflower Blue
#5170D7
ΔE00 3.71
French Blue
#436BAD
ΔE00 4.17
Royal Blue
#4169E1
ΔE00 5.33
Cadet Blue
#4E7496
ΔE00 6.62
Medium Blue
#2C6FBB
ΔE00 6.74
Dull Blue
#49759C
ΔE00 6.77
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#566FBB #BBA256
analogous
#56A1BB #566FBB #6F56BB
triadic
#566FBB #BB566F #6FBB56
tetradic
#566FBB #BB56A1 #BBA256 #56BB6F
square
#566FBB #BB56A1 #BBA256 #56BB6F
split-complementary
#566FBB #BB6F56 #A1BB56
monochromatic
#2B3B6B #3D5397 #566FBB #8294CD #ADB9DE
Accessibility & contrast
On white
4.79
#566FBB on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
4.39
#566FBB on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #566FBB
4.79:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##566FBB | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##566FBB | 1.00 | 4.79 | 4.39 | 4.79 |
| #FFFFFF | 4.79 | 1.00 | 21.00 | 1.00 |
| #000000 | 4.39 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 4.79 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#5077BE
Deuteranopia (green-blind)
#446EB9
Tritanopia (blue-blind)
#227F8C
Achromatopsia (no color)
#727272
Design tokens & code
CSS
--color: #566fbb; /* rgb */ color: rgb(86, 111, 187); /* oklch */ color: oklch(55.8% 0.122 268.5);
Tailwind
colors: {
custom: {
50: '#8c98d0',
500: '#566fbb',
950: '#000000',
},
}SCSS
$custom: #566fbb; $custom-light: #8c98d0; $custom-dark: #000000;
JSON
{
"hex": "#566fbb",
"rgb": {
"r": 86,
"g": 111,
"b": 187
},
"hsl": {
"h": 225.149,
"s": 42.616,
"l": 53.529
},
"oklch": {
"l": 0.55787,
"c": 0.12176,
"h": 268.5
},
"luminance": 0.16935
}Semantic roles & 50–950 ramp
primary
#566FBB
secondary
#CCC1A1
accent
#B355D2
background
#F9F9FC
surface
#F1F2F9
border
#CBCCD2
text
#0D0D14
muted
#7E7E82