#5B81EC#5B81EC
#5B81EC is a light, vivid blue. Relative luminance 0.240; OKLCH L 62.8% C 0.166 H 266.9°. Best body text is #000000 at 5.80:1 contrast (WCAG AA passes).
Color values
| HEX | #5B81EC |
|---|---|
| RGB | rgb(91, 129, 236) |
| HSL | hsl(224, 79%, 64%) |
| HSV | hsv(224, 61%, 93%) |
| CMYK | cmyk(61.4%, 45.3%, 0%, 7.5%) |
| CIE-LAB | lab(56.07, 19.27, -58.10) |
| CIE-LCH | lch(56.07, 61.21, 288.35°) |
| OKLab | oklab(62.81% -0.009 -0.1659) |
| OKLCH | oklch(62.81% 0.166 266.9) |
| XYZ | xyz(27.2998, 23.9784, 82.5303) |
| Luminance | 0.2398 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Soft Blue
#6488EA
ΔE00 2.28
Dodger Blue
#3E82FC
ΔE00 3.37
Lightish Blue
#3D7AFD
ΔE00 3.40
Cornflower
#6A79F7
ΔE00 4.60
Clear Blue
#247AFD
ΔE00 4.65
Azure
#007FFF
ΔE00 5.65
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#5B81EC #ECC65B
analogous
#5BCAEC #5B81EC #7E5BEC
triadic
#5B81EC #EC5B81 #81EC5B
tetradic
#5B81EC #EC5BCA #ECC65B #5BEC7E
square
#5B81EC #EC5BCA #ECC65B #5BEC7E
split-complementary
#5B81EC #EC7E5B #CAEC5B
monochromatic
#1540B7 #2457E6 #5B81EC #92ABF2 #C9D5F9
Accessibility & contrast
On white
3.62
#5B81EC on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.80
#5B81EC on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #5B81EC
5.80:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##5B81EC | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##5B81EC | 1.00 | 3.62 | 5.80 | 5.80 |
| #FFFFFF | 3.62 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.80 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.80 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#4D8DF0
Deuteranopia (green-blind)
#3580EA
Tritanopia (blue-blind)
#0099AB
Achromatopsia (no color)
#868686
Design tokens & code
CSS
--color: #5b81ec; /* rgb */ color: rgb(91, 129, 236); /* oklch */ color: oklch(62.8% 0.166 266.9);
Tailwind
colors: {
custom: {
50: '#96a5f3',
500: '#5b81ec',
950: '#000000',
},
}SCSS
$custom: #5b81ec; $custom-light: #96a5f3; $custom-dark: #000000;
JSON
{
"hex": "#5b81ec",
"rgb": {
"r": 91,
"g": 129,
"b": 236
},
"hsl": {
"h": 224.276,
"s": 79.235,
"l": 64.118
},
"oklch": {
"l": 0.62808,
"c": 0.16619,
"h": 266.9
},
"luminance": 0.23981
}Semantic roles & 50–950 ramp
primary
#5B81EC
secondary
#EBDDB8
accent
#A50ADC
background
#F9FAFE
surface
#F2F4FD
border
#CCCED5
text
#0E0F17
muted
#7E7F85