#577AE9#577AE9
#577AE9 is a mid, vivid blue. Relative luminance 0.218; OKLCH L 61.0% C 0.172 H 267.9°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).
Color values
| HEX | #577AE9 |
|---|---|
| RGB | rgb(87, 122, 233) |
| HSL | hsl(226, 77%, 63%) |
| HSV | hsv(226, 63%, 91%) |
| CMYK | cmyk(62.7%, 47.6%, 0%, 8.6%) |
| CIE-LAB | lab(53.84, 21.83, -60.01) |
| CIE-LCH | lch(53.84, 63.85, 289.99°) |
| OKLab | oklab(61% -0.0063 -0.1717) |
| OKLCH | oklch(61% 0.172 267.9) |
| XYZ | xyz(25.5930, 21.8262, 79.9392) |
| Luminance | 0.2183 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Lightish Blue
#3D7AFD
ΔE00 3.00
Cornflower
#6A79F7
ΔE00 3.92
Cornflower Blue
#5170D7
ΔE00 4.17
Clear Blue
#247AFD
ΔE00 4.42
Soft Blue
#6488EA
ΔE00 4.53
Dodger Blue
#3E82FC
ΔE00 4.58
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#577AE9 #E9C657
analogous
#57C3E9 #577AE9 #7D57E9
triadic
#577AE9 #E9577A #7AE957
tetradic
#577AE9 #E957C3 #E9C657 #57E97D
square
#577AE9 #E957C3 #E9C657 #57E97D
split-complementary
#577AE9 #E97D57 #C3E957
monochromatic
#173BAF #214FE2 #577AE9 #8DA5F0 #C3D0F7
Accessibility & contrast
On white
3.91
#577AE9 on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.37
#577AE9 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #577AE9
5.37:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##577AE9 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##577AE9 | 1.00 | 3.91 | 5.37 | 5.37 |
| #FFFFFF | 3.91 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.37 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.37 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#4188ED
Deuteranopia (green-blind)
#237AE7
Tritanopia (blue-blind)
#0094A6
Achromatopsia (no color)
#818181
Design tokens & code
CSS
--color: #577ae9; /* rgb */ color: rgb(87, 122, 233); /* oklch */ color: oklch(61.0% 0.172 267.9);
Tailwind
colors: {
custom: {
50: '#93a0f1',
500: '#577ae9',
950: '#000000',
},
}SCSS
$custom: #577ae9; $custom-light: #93a0f1; $custom-dark: #000000;
JSON
{
"hex": "#577ae9",
"rgb": {
"r": 87,
"g": 122,
"b": 233
},
"hsl": {
"h": 225.616,
"s": 76.842,
"l": 62.745
},
"oklch": {
"l": 0.60997,
"c": 0.17184,
"h": 267.9
},
"luminance": 0.21828
}Semantic roles & 50–950 ramp
primary
#577AE9
secondary
#E8DCB3
accent
#A80CD9
background
#F9F9FE
surface
#F2F2FD
border
#CCCCD5
text
#0E0E17
muted
#7E7E85