#5B66E9#5B66E9
#5B66E9 is a mid, vivid blue. Relative luminance 0.176; OKLCH L 57.4% C 0.195 H 274.8°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).
Color values
| HEX | #5B66E9 |
|---|---|
| RGB | rgb(91, 102, 233) |
| HSL | hsl(235, 76%, 64%) |
| HSV | hsv(235, 61%, 91%) |
| CMYK | cmyk(60.9%, 56.2%, 0%, 8.6%) |
| CIE-LAB | lab(49.02, 34.76, -67.78) |
| CIE-LCH | lch(49.02, 76.18, 297.15°) |
| OKLab | oklab(57.42% 0.0164 -0.1947) |
| OKLCH | oklch(57.42% 0.195 274.8) |
| XYZ | xyz(23.7689, 17.6082, 79.2212) |
| Luminance | 0.1761 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Royal Blue
#4169E1
ΔE00 4.31
Dark Periwinkle
#665FD1
ΔE00 4.50
Cornflower Blue
#5170D7
ΔE00 4.96
Mediumslateblue
#7B68EE
ΔE00 5.33
Warm Blue
#4B57DB
ΔE00 5.47
Bright Blue
#0165FC
ΔE00 5.86
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#5B66E9 #E9DE5B
analogous
#5BADE9 #5B66E9 #975BE9
triadic
#5B66E9 #E95B66 #66E95B
tetradic
#5B66E9 #E95BAD #E9DE5B #5BE997
square
#5B66E9 #E95BAD #E9DE5B #5BE997
split-complementary
#5B66E9 #E9975B #ADE95B
monochromatic
#1824B2 #2534E2 #5B66E9 #9198F0 #C7CBF7
Accessibility & contrast
On white
4.64
#5B66E9 on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
4.52
#5B66E9 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#FFFFFF on #5B66E9
4.64:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##5B66E9 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##5B66E9 | 1.00 | 4.64 | 4.52 | 4.64 |
| #FFFFFF | 4.64 | 1.00 | 21.00 | 1.00 |
| #000000 | 4.52 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 4.64 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#007BED
Deuteranopia (green-blind)
#006EE6
Tritanopia (blue-blind)
#00859E
Achromatopsia (no color)
#747474
Design tokens & code
CSS
--color: #5b66e9; /* rgb */ color: rgb(91, 102, 233); /* oklch */ color: oklch(57.4% 0.195 274.8);
Tailwind
colors: {
custom: {
50: '#9691f1',
500: '#5b66e9',
950: '#000000',
},
}SCSS
$custom: #5b66e9; $custom-light: #9691f1; $custom-dark: #000000;
JSON
{
"hex": "#5b66e9",
"rgb": {
"r": 91,
"g": 102,
"b": 233
},
"hsl": {
"h": 235.352,
"s": 76.344,
"l": 63.529
},
"oklch": {
"l": 0.57422,
"c": 0.19543,
"h": 274.8
},
"luminance": 0.1761
}Semantic roles & 50–950 ramp
primary
#5B66E9
secondary
#E9E5B7
accent
#C90DD9
background
#F9F8FE
surface
#F2F0FD
border
#CCCBD5
text
#0F0C17
muted
#7E7D85