#577DE9#577DE9
#577DE9 is a mid, vivid blue. Relative luminance 0.226; OKLCH L 61.6% C 0.168 H 266.9°. Best body text is #000000 at 5.52:1 contrast (WCAG AA passes).
Color values
| HEX | #577DE9 |
|---|---|
| RGB | rgb(87, 125, 233) |
| HSL | hsl(224, 77%, 63%) |
| HSV | hsv(224, 63%, 91%) |
| CMYK | cmyk(62.7%, 46.4%, 0%, 8.6%) |
| CIE-LAB | lab(54.63, 19.99, -58.74) |
| CIE-LCH | lch(54.63, 62.05, 288.80°) |
| OKLab | oklab(61.6% -0.0092 -0.168) |
| OKLCH | oklch(61.6% 0.168 266.9) |
| XYZ | xyz(25.9670, 22.5743, 80.0638) |
| Luminance | 0.2258 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Lightish Blue
#3D7AFD
ΔE00 2.85
Soft Blue
#6488EA
ΔE00 3.60
Dodger Blue
#3E82FC
ΔE00 3.77
Clear Blue
#247AFD
ΔE00 4.15
Cornflower
#6A79F7
ΔE00 4.40
Cornflower Blue
#5170D7
ΔE00 5.03
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#577DE9 #E9C357
analogous
#57C6E9 #577DE9 #7A57E9
triadic
#577DE9 #E9577D #7DE957
tetradic
#577DE9 #E957C6 #E9C357 #57E97A
square
#577DE9 #E957C6 #E9C357 #57E97A
split-complementary
#577DE9 #E97A57 #C6E957
monochromatic
#173EAF #2153E2 #577DE9 #8DA7F0 #C3D1F7
Accessibility & contrast
On white
3.81
#577DE9 on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.52
#577DE9 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #577DE9
5.52:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##577DE9 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##577DE9 | 1.00 | 3.81 | 5.52 | 5.52 |
| #FFFFFF | 3.81 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.52 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.52 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#478AED
Deuteranopia (green-blind)
#2D7CE7
Tritanopia (blue-blind)
#0096A8
Achromatopsia (no color)
#838383
Design tokens & code
CSS
--color: #577de9; /* rgb */ color: rgb(87, 125, 233); /* oklch */ color: oklch(61.6% 0.168 266.9);
Tailwind
colors: {
custom: {
50: '#93a2f1',
500: '#577de9',
950: '#000000',
},
}SCSS
$custom: #577de9; $custom-light: #93a2f1; $custom-dark: #000000;
JSON
{
"hex": "#577de9",
"rgb": {
"r": 87,
"g": 125,
"b": 233
},
"hsl": {
"h": 224.384,
"s": 76.842,
"l": 62.745
},
"oklch": {
"l": 0.61599,
"c": 0.16821,
"h": 266.9
},
"luminance": 0.22577
}Semantic roles & 50–950 ramp
primary
#577DE9
secondary
#E8DBB3
accent
#A40CD9
background
#F9F9FE
surface
#F2F2FD
border
#CCCCD5
text
#0E0F17
muted
#7E7E85