#5B57EF#5B57EF
#5B57EF is a mid, highly saturated blue. Relative luminance 0.153; OKLCH L 55.3% C 0.221 H 277.5°. Best body text is #FFFFFF at 5.18:1 contrast (WCAG AA passes).
Color values
| HEX | #5B57EF |
|---|---|
| RGB | rgb(91, 87, 239) |
| HSL | hsl(242, 83%, 64%) |
| HSV | hsv(242, 64%, 94%) |
| CMYK | cmyk(61.9%, 63.6%, 0%, 6.3%) |
| CIE-LAB | lab(46.00, 45.66, -76.06) |
| CIE-LCH | lch(46.00, 88.72, 300.98°) |
| OKLab | oklab(55.34% 0.0289 -0.2192) |
| OKLCH | oklch(55.34% 0.221 277.5) |
| XYZ | xyz(23.2975, 15.2707, 83.3644) |
| Luminance | 0.1527 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Warm Blue
#4B57DB
ΔE00 3.69
Dark Periwinkle
#665FD1
ΔE00 4.53
Light Indigo
#6D5ACF
ΔE00 4.94
Slate Blue
#6A5ACD
ΔE00 4.95
Electric Blue
#0652FF
ΔE00 5.26
Purpleish Blue
#6140EF
ΔE00 5.73
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#5B57EF #EBEF57
analogous
#579FEF #5B57EF #A757EF
triadic
#5B57EF #EF5B57 #57EF5B
tetradic
#5B57EF #EF579F #EBEF57 #57EFA7
square
#5B57EF #EF579F #EBEF57 #57EFA7
split-complementary
#5B57EF #EFA757 #9FEF57
monochromatic
#1612BA #241FEA #5B57EF #928FF4 #C8C7FA
Accessibility & contrast
On white
5.18
#5B57EF on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
4.05
#5B57EF on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #5B57EF
5.18:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##5B57EF | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##5B57EF | 1.00 | 5.18 | 4.05 | 5.18 |
| #FFFFFF | 5.18 | 1.00 | 21.00 | 1.00 |
| #000000 | 4.05 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.18 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0073F4
Deuteranopia (green-blind)
#0067EC
Tritanopia (blue-blind)
#007E9B
Achromatopsia (no color)
#6D6D6D
Design tokens & code
CSS
--color: #5b57ef; /* rgb */ color: rgb(91, 87, 239); /* oklch */ color: oklch(55.3% 0.221 277.5);
Tailwind
colors: {
custom: {
50: '#9887f5',
500: '#5b57ef',
950: '#000000',
},
}SCSS
$custom: #5b57ef; $custom-light: #9887f5; $custom-dark: #000000;
JSON
{
"hex": "#5b57ef",
"rgb": {
"r": 91,
"g": 87,
"b": 239
},
"hsl": {
"h": 241.579,
"s": 82.609,
"l": 63.922
},
"oklch": {
"l": 0.55341,
"c": 0.22108,
"h": 277.5
},
"luminance": 0.15273
}Semantic roles & 50–950 ramp
primary
#5B57EF
secondary
#EAECB6
accent
#DF06D9
background
#FAF8FF
surface
#F4EFFF
border
#CECAD7
text
#0F0B17
muted
#7F7C85