#577EC8#577EC8
#577EC8 is a mid, vivid blue. Relative luminance 0.211; OKLCH L 59.8% C 0.122 H 262.3°. Best body text is #000000 at 5.22:1 contrast (WCAG AA passes).
Color values
| HEX | #577EC8 |
|---|---|
| RGB | rgb(87, 126, 200) |
| HSL | hsl(219, 51%, 56%) |
| HSV | hsv(219, 57%, 78%) |
| CMYK | cmyk(56.5%, 37%, 0%, 21.6%) |
| CIE-LAB | lab(53.08, 8.38, -42.62) |
| CIE-LCH | lch(53.08, 43.43, 281.12°) |
| OKLab | oklab(59.81% -0.0164 -0.1207) |
| OKLCH | oklch(59.81% 0.122 262.3) |
| XYZ | xyz(21.8131, 21.1163, 57.5588) |
| Luminance | 0.2112 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Off Blue
#5684AE
ΔE00 4.92
Faded Blue
#658CBB
ΔE00 5.12
Cornflower Blue
#5170D7
ΔE00 5.23
Windows Blue
#3778BF
ΔE00 5.31
Dusty Blue
#5A86AD
ΔE00 5.36
Soft Blue
#6488EA
ΔE00 5.45
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#577EC8 #C8A157
analogous
#57B7C8 #577EC8 #6957C8
triadic
#577EC8 #C8577E #7EC857
tetradic
#577EC8 #C857B7 #C8A157 #57C869
square
#577EC8 #C857B7 #C8A157 #57C869
split-complementary
#577EC8 #C86957 #B7C857
monochromatic
#29457C #385FAA #577EC8 #85A1D7 #B3C5E6
Accessibility & contrast
On white
4.02
#577EC8 on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.22
#577EC8 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #577EC8
5.22:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##577EC8 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##577EC8 | 1.00 | 4.02 | 5.22 | 5.22 |
| #FFFFFF | 4.02 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.22 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.22 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#6084CB
Deuteranopia (green-blind)
#517AC6
Tritanopia (blue-blind)
#018E99
Achromatopsia (no color)
#7F7F7F
Design tokens & code
CSS
--color: #577ec8; /* rgb */ color: rgb(87, 126, 200); /* oklch */ color: oklch(59.8% 0.122 262.3);
Tailwind
colors: {
custom: {
50: '#8ea3d9',
500: '#577ec8',
950: '#000000',
},
}SCSS
$custom: #577ec8; $custom-light: #8ea3d9; $custom-dark: #000000;
JSON
{
"hex": "#577ec8",
"rgb": {
"r": 87,
"g": 126,
"b": 200
},
"hsl": {
"h": 219.292,
"s": 50.673,
"l": 56.275
},
"oklch": {
"l": 0.5981,
"c": 0.12177,
"h": 262.3
},
"luminance": 0.21118
}Semantic roles & 50–950 ramp
primary
#577EC8
secondary
#D5C5A6
accent
#AA4EDA
background
#F9F9FD
surface
#F1F2FA
border
#CBCCD3
text
#0D0F14
muted
#7E7E83