#6566BF#6566BF
#6566BF is a mid, vivid blue. Relative luminance 0.160; OKLCH L 55.2% C 0.136 H 280.5°. Best body text is #FFFFFF at 4.99:1 contrast (WCAG AA passes).
Color values
| HEX | #6566BF |
|---|---|
| RGB | rgb(101, 102, 191) |
| HSL | hsl(239, 41%, 57%) |
| HSV | hsv(239, 47%, 75%) |
| CMYK | cmyk(47.1%, 46.6%, 0%, 25.1%) |
| CIE-LAB | lab(47.01, 23.38, -47.03) |
| CIE-LCH | lch(47.01, 52.52, 296.44°) |
| OKLab | oklab(55.23% 0.0247 -0.1335) |
| OKLCH | oklch(55.23% 0.136 280.5) |
| XYZ | xyz(19.5193, 16.0300, 51.3457) |
| Luminance | 0.1603 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Dark Periwinkle
#665FD1
ΔE00 3.72
Iris
#6258C4
ΔE00 4.74
Slate Blue
#6A5ACD
ΔE00 4.84
Light Indigo
#6D5ACF
ΔE00 5.17
Cornflower Blue
#5170D7
ΔE00 6.68
Warm Blue
#4B57DB
ΔE00 6.95
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#6566BF #BFBE65
analogous
#6593BF #6566BF #9165BF
triadic
#6566BF #BF6566 #66BF65
tetradic
#6566BF #BF6593 #BFBE65 #65BF91
square
#6566BF #BF6593 #BFBE65 #65BF91
split-complementary
#6566BF #BF9165 #93BF65
monochromatic
#323378 #4445A3 #6566BF #9091D1 #BBBCE3
Accessibility & contrast
On white
4.99
#6566BF on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
4.21
#6566BF on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #6566BF
4.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##6566BF | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##6566BF | 1.00 | 4.99 | 4.21 | 4.99 |
| #FFFFFF | 4.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 4.21 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 4.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#4173C2
Deuteranopia (green-blind)
#3B6CBD
Tritanopia (blue-blind)
#457989
Achromatopsia (no color)
#6F6F6F
Design tokens & code
CSS
--color: #6566bf; /* rgb */ color: rgb(101, 102, 191); /* oklch */ color: oklch(55.2% 0.136 280.5);
Tailwind
colors: {
custom: {
50: '#9691d3',
500: '#6566bf',
950: '#000000',
},
}SCSS
$custom: #6566bf; $custom-light: #9691d3; $custom-dark: #000000;
JSON
{
"hex": "#6566bf",
"rgb": {
"r": 101,
"g": 102,
"b": 191
},
"hsl": {
"h": 239.333,
"s": 41.284,
"l": 57.255
},
"oklch": {
"l": 0.55234,
"c": 0.13574,
"h": 280.5
},
"luminance": 0.16031
}Semantic roles & 50–950 ramp
primary
#6566BF
secondary
#D2D2AE
accent
#D057D1
background
#F9F8FD
surface
#F2F0FA
border
#CCCBD3
text
#0E0C14
muted
#7E7D83