#4573FB#4573FB
#4573FB is a mid, highly saturated blue. Relative luminance 0.205; OKLCH L 60.0% C 0.209 H 266.1°. Best body text is #000000 at 5.10:1 contrast (WCAG AA passes).
Color values
| HEX | #4573FB |
|---|---|
| RGB | rgb(69, 115, 251) |
| HSL | hsl(225, 96%, 63%) |
| HSV | hsv(225, 73%, 98%) |
| CMYK | cmyk(72.5%, 54.2%, 0%, 1.6%) |
| CIE-LAB | lab(52.39, 29.77, -72.42) |
| CIE-LCH | lch(52.39, 78.30, 292.35°) |
| OKLab | oklab(60.04% -0.0143 -0.2087) |
| OKLCH | oklch(60.04% 0.209 266.1) |
| XYZ | xyz(25.9915, 20.4889, 93.8330) |
| Luminance | 0.2049 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Lightish Blue
#3D7AFD
ΔE00 2.73
Clear Blue
#247AFD
ΔE00 4.05
Deep Sky Blue
#0D75F8
ΔE00 4.11
Cornflower Blue
#5170D7
ΔE00 4.40
Cornflower
#6A79F7
ΔE00 4.69
Royal Blue
#4169E1
ΔE00 4.83
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#4573FB #FBCD45
analogous
#45CEFB #4573FB #7245FB
triadic
#4573FB #FB4573 #73FB45
tetradic
#4573FB #FB45CE #FBCD45 #45FB72
square
#4573FB #FB45CE #FBCD45 #45FB72
split-complementary
#4573FB #FB7245 #CEFB45
monochromatic
#0434C1 #0946FA #4573FB #81A0FC #BDCDFE
Accessibility & contrast
On white
4.12
#4573FB on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.10
#4573FB on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #4573FB
5.10:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##4573FB | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##4573FB | 1.00 | 4.12 | 5.10 | 5.10 |
| #FFFFFF | 4.12 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.10 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.10 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0086FF
Deuteranopia (green-blind)
#0075F8
Tritanopia (blue-blind)
#0094AC
Achromatopsia (no color)
#7D7D7D
Design tokens & code
CSS
--color: #4573fb; /* rgb */ color: rgb(69, 115, 251); /* oklch */ color: oklch(60.0% 0.209 266.1);
Tailwind
colors: {
custom: {
50: '#8f9afe',
500: '#4573fb',
950: '#000000',
},
}SCSS
$custom: #4573fb; $custom-light: #8f9afe; $custom-dark: #000000;
JSON
{
"hex": "#4573fb",
"rgb": {
"r": 69,
"g": 115,
"b": 251
},
"hsl": {
"h": 224.835,
"s": 95.789,
"l": 62.745
},
"oklch": {
"l": 0.60043,
"c": 0.20917,
"h": 266.1
},
"luminance": 0.20492
}Semantic roles & 50–950 ramp
primary
#4573FB
secondary
#EFDEAD
accent
#AB00E6
background
#F9F9FF
surface
#F2F2FF
border
#CCCCD7
text
#0E0E18
muted
#7E7E86