#577ADB#577ADB
#577ADB is a mid, vivid blue. Relative luminance 0.211; OKLCH L 60.1% C 0.153 H 266.9°. Best body text is #000000 at 5.21:1 contrast (WCAG AA passes).
Color values
| HEX | #577ADB |
|---|---|
| RGB | rgb(87, 122, 219) |
| HSL | hsl(224, 65%, 60%) |
| HSV | hsv(224, 60%, 86%) |
| CMYK | cmyk(60.3%, 44.3%, 0%, 14.1%) |
| CIE-LAB | lab(53.01, 17.11, -53.48) |
| CIE-LCH | lch(53.01, 56.15, 287.75°) |
| OKLab | oklab(60.1% -0.0083 -0.1525) |
| OKLCH | oklch(60.1% 0.153 266.9) |
| XYZ | xyz(23.6718, 21.0578, 69.8212) |
| Luminance | 0.2106 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cornflower Blue
#5170D7
ΔE00 3.51
Lightish Blue
#3D7AFD
ΔE00 4.02
Clear Blue
#247AFD
ΔE00 4.88
Soft Blue
#6488EA
ΔE00 4.98
Dodger Blue
#3E82FC
ΔE00 5.19
Deep Sky Blue
#0D75F8
ΔE00 5.24
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#577ADB #DBB857
analogous
#57BCDB #577ADB #7657DB
triadic
#577ADB #DB577A #7ADB57
tetradic
#577ADB #DB57BC #DBB857 #57DB76
square
#577ADB #DB57BC #DBB857 #57DB76
split-complementary
#577ADB #DB7657 #BCDB57
monochromatic
#204097 #2B55CA #577ADB #89A2E6 #BCCAF1
Accessibility & contrast
On white
4.03
#577ADB on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.21
#577ADB on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #577ADB
5.21:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##577ADB | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##577ADB | 1.00 | 4.03 | 5.21 | 5.21 |
| #FFFFFF | 4.03 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.21 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.21 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#4D85DF
Deuteranopia (green-blind)
#3979D9
Tritanopia (blue-blind)
#0090A0
Achromatopsia (no color)
#7F7F7F
Design tokens & code
CSS
--color: #577adb; /* rgb */ color: rgb(87, 122, 219); /* oklch */ color: oklch(60.1% 0.153 266.9);
Tailwind
colors: {
custom: {
50: '#91a0e7',
500: '#577adb',
950: '#000000',
},
}SCSS
$custom: #577adb; $custom-light: #91a0e7; $custom-dark: #000000;
JSON
{
"hex": "#577adb",
"rgb": {
"r": 87,
"g": 122,
"b": 219
},
"hsl": {
"h": 224.091,
"s": 64.706,
"l": 60
},
"oklch": {
"l": 0.60096,
"c": 0.15276,
"h": 266.9
},
"luminance": 0.2106
}Semantic roles & 50–950 ramp
primary
#577ADB
secondary
#E0D3AD
accent
#BB40E8
background
#F9F9FE
surface
#F2F2FC
border
#CCCCD5
text
#0E0E16
muted
#7E7E84