#577CF3#577CF3
#577CF3 is a light, vivid blue. Relative luminance 0.229; OKLCH L 62.1% C 0.183 H 267.8°. Best body text is #000000 at 5.58:1 contrast (WCAG AA passes).
Color values
| HEX | #577CF3 |
|---|---|
| RGB | rgb(87, 124, 243) |
| HSL | hsl(226, 87%, 65%) |
| HSV | hsv(226, 64%, 95%) |
| CMYK | cmyk(64.2%, 49%, 0%, 4.7%) |
| CIE-LAB | lab(54.98, 23.99, -63.75) |
| CIE-LCH | lch(54.98, 68.11, 290.62°) |
| OKLab | oklab(62.06% -0.007 -0.1827) |
| OKLCH | oklch(62.06% 0.183 267.8) |
| XYZ | xyz(27.3102, 22.9101, 87.7595) |
| Luminance | 0.2291 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Lightish Blue
#3D7AFD
ΔE00 2.56
Cornflower
#6A79F7
ΔE00 3.52
Dodger Blue
#3E82FC
ΔE00 3.92
Soft Blue
#6488EA
ΔE00 3.92
Clear Blue
#247AFD
ΔE00 4.26
Deep Sky Blue
#0D75F8
ΔE00 5.37
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#577CF3 #F3CE57
analogous
#57CAF3 #577CF3 #8057F3
triadic
#577CF3 #F3577C #7CF357
tetradic
#577CF3 #F357CA #F3CE57 #57F380
square
#577CF3 #F357CA #F3CE57 #57F380
split-complementary
#577CF3 #F38057 #CAF357
monochromatic
#0E39C2 #1E4FEF #577CF3 #90A9F7 #C9D5FB
Accessibility & contrast
On white
3.76
#577CF3 on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.58
#577CF3 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #577CF3
5.58:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##577CF3 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##577CF3 | 1.00 | 3.76 | 5.58 | 5.58 |
| #FFFFFF | 3.76 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.58 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.58 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#3B8BF7
Deuteranopia (green-blind)
#0D7DF1
Tritanopia (blue-blind)
#0098AC
Achromatopsia (no color)
#848484
Design tokens & code
CSS
--color: #577cf3; /* rgb */ color: rgb(87, 124, 243); /* oklch */ color: oklch(62.1% 0.183 267.8);
Tailwind
colors: {
custom: {
50: '#95a1f8',
500: '#577cf3',
950: '#000000',
},
}SCSS
$custom: #577cf3; $custom-light: #95a1f8; $custom-dark: #000000;
JSON
{
"hex": "#577cf3",
"rgb": {
"r": 87,
"g": 124,
"b": 243
},
"hsl": {
"h": 225.769,
"s": 86.667,
"l": 64.706
},
"oklch": {
"l": 0.62061,
"c": 0.18283,
"h": 267.8
},
"luminance": 0.22913
}Semantic roles & 50–950 ramp
primary
#577CF3
secondary
#EEE1B8
accent
#AE02E3
background
#F9F9FF
surface
#F2F2FF
border
#CCCCD7
text
#0F0E17
muted
#7E7E85