#577CE0#577CE0
#577CE0 is a mid, vivid blue. Relative luminance 0.218; OKLCH L 60.8% C 0.157 H 266.5°. Best body text is #000000 at 5.36:1 contrast (WCAG AA passes).
Color values
| HEX | #577CE0 |
|---|---|
| RGB | rgb(87, 124, 224) |
| HSL | hsl(224, 69%, 61%) |
| HSV | hsv(224, 61%, 88%) |
| CMYK | cmyk(61.2%, 44.6%, 0%, 12.2%) |
| CIE-LAB | lab(53.84, 17.57, -54.97) |
| CIE-LCH | lch(53.84, 57.71, 287.72°) |
| OKLab | oklab(60.82% -0.0096 -0.1569) |
| OKLCH | oklch(60.82% 0.157 266.5) |
| XYZ | xyz(24.5881, 21.8212, 73.4227) |
| Luminance | 0.2182 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Lightish Blue
#3D7AFD
ΔE00 3.47
Soft Blue
#6488EA
ΔE00 4.17
Cornflower Blue
#5170D7
ΔE00 4.32
Dodger Blue
#3E82FC
ΔE00 4.39
Clear Blue
#247AFD
ΔE00 4.45
Cornflower
#6A79F7
ΔE00 5.02
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#577CE0 #E0BB57
analogous
#57C0E0 #577CE0 #7657E0
triadic
#577CE0 #E0577C #7CE057
tetradic
#577CE0 #E057C0 #E0BB57 #57E076
square
#577CE0 #E057C0 #E0BB57 #57E076
split-complementary
#577CE0 #E07657 #C0E057
monochromatic
#1D409F #2755D3 #577CE0 #8BA4EA #BECDF3
Accessibility & contrast
On white
3.91
#577CE0 on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.36
#577CE0 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #577CE0
5.36:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##577CE0 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##577CE0 | 1.00 | 3.91 | 5.36 | 5.36 |
| #FFFFFF | 3.91 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.36 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.36 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#4D87E4
Deuteranopia (green-blind)
#377BDE
Tritanopia (blue-blind)
#0093A3
Achromatopsia (no color)
#818181
Design tokens & code
CSS
--color: #577ce0; /* rgb */ color: rgb(87, 124, 224); /* oklch */ color: oklch(60.8% 0.157 266.5);
Tailwind
colors: {
custom: {
50: '#92a1ea',
500: '#577ce0',
950: '#000000',
},
}SCSS
$custom: #577ce0; $custom-light: #92a1ea; $custom-dark: #000000;
JSON
{
"hex": "#577ce0",
"rgb": {
"r": 87,
"g": 124,
"b": 224
},
"hsl": {
"h": 223.796,
"s": 68.844,
"l": 60.98
},
"oklch": {
"l": 0.60821,
"c": 0.15719,
"h": 266.5
},
"luminance": 0.21823
}Semantic roles & 50–950 ramp
primary
#577CE0
secondary
#E3D5B0
accent
#9E15D1
background
#F9F9FE
surface
#F2F2FD
border
#CCCCD5
text
#0E0E16
muted
#7E7E84