#577DE0#577DE0
#577DE0 is a mid, vivid blue. Relative luminance 0.221; OKLCH L 61.0% C 0.156 H 266.1°. Best body text is #000000 at 5.41:1 contrast (WCAG AA passes).
Color values
| HEX | #577DE0 |
|---|---|
| RGB | rgb(87, 125, 224) |
| HSL | hsl(223, 69%, 61%) |
| HSV | hsv(223, 61%, 88%) |
| CMYK | cmyk(61.2%, 44.2%, 0%, 12.2%) |
| CIE-LAB | lab(54.10, 16.96, -54.55) |
| CIE-LCH | lch(54.10, 57.12, 287.27°) |
| OKLab | oklab(61.03% -0.0106 -0.1556) |
| OKLCH | oklch(61.03% 0.156 266.1) |
| XYZ | xyz(24.7140, 22.0731, 73.4647) |
| Luminance | 0.2208 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Lightish Blue
#3D7AFD
ΔE00 3.46
Soft Blue
#6488EA
ΔE00 3.89
Dodger Blue
#3E82FC
ΔE00 4.15
Clear Blue
#247AFD
ΔE00 4.38
Cornflower Blue
#5170D7
ΔE00 4.65
Deep Sky Blue
#0D75F8
ΔE00 5.18
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#577DE0 #E0BA57
analogous
#57C1E0 #577DE0 #7557E0
triadic
#577DE0 #E0577D #7DE057
tetradic
#577DE0 #E057C1 #E0BA57 #57E075
square
#577DE0 #E057C1 #E0BA57 #57E075
split-complementary
#577DE0 #E07557 #C1E057
monochromatic
#1D419F #2757D3 #577DE0 #8BA5EA #BECDF3
Accessibility & contrast
On white
3.88
#577DE0 on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.41
#577DE0 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #577DE0
5.41:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##577DE0 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##577DE0 | 1.00 | 3.88 | 5.41 | 5.41 |
| #FFFFFF | 3.88 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.41 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.41 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#4F88E4
Deuteranopia (green-blind)
#397CDE
Tritanopia (blue-blind)
#0093A4
Achromatopsia (no color)
#818181
Design tokens & code
CSS
--color: #577de0; /* rgb */ color: rgb(87, 125, 224); /* oklch */ color: oklch(61.0% 0.156 266.1);
Tailwind
colors: {
custom: {
50: '#92a2ea',
500: '#577de0',
950: '#000000',
},
}SCSS
$custom: #577de0; $custom-light: #92a2ea; $custom-dark: #000000;
JSON
{
"hex": "#577de0",
"rgb": {
"r": 87,
"g": 125,
"b": 224
},
"hsl": {
"h": 223.358,
"s": 68.844,
"l": 60.98
},
"oklch": {
"l": 0.61026,
"c": 0.15599,
"h": 266.1
},
"luminance": 0.22075
}Semantic roles & 50–950 ramp
primary
#577DE0
secondary
#E3D5B0
accent
#9D15D1
background
#F9F9FE
surface
#F2F2FD
border
#CCCCD5
text
#0E0F16
muted
#7E7E84