#577DEA#577DEA
#577DEA is a mid, vivid blue. Relative luminance 0.226; OKLCH L 61.7% C 0.170 H 266.9°. Best body text is #000000 at 5.53:1 contrast (WCAG AA passes).
Color values
| HEX | #577DEA |
|---|---|
| RGB | rgb(87, 125, 234) |
| HSL | hsl(224, 78%, 63%) |
| HSV | hsv(224, 63%, 92%) |
| CMYK | cmyk(62.8%, 46.6%, 0%, 8.2%) |
| CIE-LAB | lab(54.69, 20.33, -59.20) |
| CIE-LCH | lch(54.69, 62.60, 288.95°) |
| OKLab | oklab(61.66% -0.0091 -0.1693) |
| OKLCH | oklch(61.66% 0.17 266.9) |
| XYZ | xyz(26.1103, 22.6316, 80.8183) |
| Luminance | 0.2263 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Lightish Blue
#3D7AFD
ΔE00 2.80
Soft Blue
#6488EA
ΔE00 3.58
Dodger Blue
#3E82FC
ΔE00 3.74
Clear Blue
#247AFD
ΔE00 4.14
Cornflower
#6A79F7
ΔE00 4.32
Cornflower Blue
#5170D7
ΔE00 5.08
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#577DEA #EAC457
analogous
#57C6EA #577DEA #7A57EA
triadic
#577DEA #EA577D #7DEA57
tetradic
#577DEA #EA57C6 #EAC457 #57EA7A
square
#577DEA #EA57C6 #EAC457 #57EA7A
split-complementary
#577DEA #EA7A57 #C6EA57
monochromatic
#163EB1 #2153E3 #577DEA #8DA7F1 #C4D1F8
Accessibility & contrast
On white
3.80
#577DEA on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.53
#577DEA on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #577DEA
5.53:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##577DEA | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##577DEA | 1.00 | 3.80 | 5.53 | 5.53 |
| #FFFFFF | 3.80 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.53 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.53 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#468AEE
Deuteranopia (green-blind)
#2B7DE8
Tritanopia (blue-blind)
#0096A8
Achromatopsia (no color)
#838383
Design tokens & code
CSS
--color: #577dea; /* rgb */ color: rgb(87, 125, 234); /* oklch */ color: oklch(61.7% 0.170 266.9);
Tailwind
colors: {
custom: {
50: '#94a2f1',
500: '#577dea',
950: '#000000',
},
}SCSS
$custom: #577dea; $custom-light: #94a2f1; $custom-dark: #000000;
JSON
{
"hex": "#577dea",
"rgb": {
"r": 87,
"g": 125,
"b": 234
},
"hsl": {
"h": 224.49,
"s": 77.778,
"l": 62.941
},
"oklch": {
"l": 0.61664,
"c": 0.16955,
"h": 266.9
},
"luminance": 0.22634
}Semantic roles & 50–950 ramp
primary
#577DEA
secondary
#E9DBB4
accent
#A50BDA
background
#F9F9FE
surface
#F2F2FD
border
#CCCCD5
text
#0E0F17
muted
#7E7E85