#577AD8#577AD8
#577AD8 is a mid, vivid blue. Relative luminance 0.209; OKLCH L 59.9% C 0.149 H 266.6°. Best body text is #000000 at 5.18:1 contrast (WCAG AA passes).
Color values
| HEX | #577AD8 |
|---|---|
| RGB | rgb(87, 122, 216) |
| HSL | hsl(224, 62%, 59%) |
| HSV | hsv(224, 60%, 85%) |
| CMYK | cmyk(59.7%, 43.5%, 0%, 15.3%) |
| CIE-LAB | lab(52.84, 16.11, -52.06) |
| CIE-LCH | lch(52.84, 54.50, 287.19°) |
| OKLab | oklab(59.91% -0.0088 -0.1484) |
| OKLCH | oklch(59.91% 0.149 266.6) |
| XYZ | xyz(23.2805, 20.9012, 67.7599) |
| Luminance | 0.2090 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cornflower Blue
#5170D7
ΔE00 3.47
Lightish Blue
#3D7AFD
ΔE00 4.29
Clear Blue
#247AFD
ΔE00 5.05
Soft Blue
#6488EA
ΔE00 5.15
Deep Sky Blue
#0D75F8
ΔE00 5.33
Dodger Blue
#3E82FC
ΔE00 5.37
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#577AD8 #D8B557
analogous
#57BBD8 #577AD8 #7557D8
triadic
#577AD8 #D8577A #7AD857
tetradic
#577AD8 #D857BB #D8B557 #57D875
square
#577AD8 #D857BB #D8B557 #57D875
split-complementary
#577AD8 #D87557 #BBD857
monochromatic
#224193 #2E56C4 #577AD8 #89A1E4 #BAC9EF
Accessibility & contrast
On white
4.05
#577AD8 on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.18
#577AD8 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #577AD8
5.18:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##577AD8 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##577AD8 | 1.00 | 4.05 | 5.18 | 5.18 |
| #FFFFFF | 4.05 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.18 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.18 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#4F84DC
Deuteranopia (green-blind)
#3D79D6
Tritanopia (blue-blind)
#008F9E
Achromatopsia (no color)
#7E7E7E
Design tokens & code
CSS
--color: #577ad8; /* rgb */ color: rgb(87, 122, 216); /* oklch */ color: oklch(59.9% 0.149 266.6);
Tailwind
colors: {
custom: {
50: '#91a0e4',
500: '#577ad8',
950: '#000000',
},
}SCSS
$custom: #577ad8; $custom-light: #91a0e4; $custom-dark: #000000;
JSON
{
"hex": "#577ad8",
"rgb": {
"r": 87,
"g": 122,
"b": 216
},
"hsl": {
"h": 223.721,
"s": 62.319,
"l": 59.412
},
"oklch": {
"l": 0.59909,
"c": 0.14863,
"h": 266.6
},
"luminance": 0.20903
}Semantic roles & 50–950 ramp
primary
#577AD8
secondary
#DFD1AC
accent
#B942E5
background
#F9F9FE
surface
#F2F2FC
border
#CCCCD5
text
#0E0E16
muted
#7E7E84