#577AD2#577AD2
#577AD2 is a mid, vivid blue. Relative luminance 0.206; OKLCH L 59.5% C 0.140 H 266.0°. Best body text is #000000 at 5.12:1 contrast (WCAG AA passes).
Color values
| HEX | #577AD2 |
|---|---|
| RGB | rgb(87, 122, 210) |
| HSL | hsl(223, 58%, 58%) |
| HSV | hsv(223, 59%, 82%) |
| CMYK | cmyk(58.6%, 41.9%, 0%, 17.6%) |
| CIE-LAB | lab(52.51, 14.11, -49.20) |
| CIE-LCH | lch(52.51, 51.19, 286.00°) |
| OKLab | oklab(59.54% -0.0099 -0.14) |
| OKLCH | oklch(59.54% 0.14 266) |
| XYZ | xyz(22.5189, 20.5966, 63.7491) |
| Luminance | 0.2060 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cornflower Blue
#5170D7
ΔE00 3.52
Lightish Blue
#3D7AFD
ΔE00 4.86
Clear Blue
#247AFD
ΔE00 5.42
Soft Blue
#6488EA
ΔE00 5.53
Deep Sky Blue
#0D75F8
ΔE00 5.57
Dodger Blue
#3E82FC
ΔE00 5.79
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#577AD2 #D2AF57
analogous
#57B7D2 #577AD2 #7157D2
triadic
#577AD2 #D2577A #7AD257
tetradic
#577AD2 #D257B7 #D2AF57 #57D271
square
#577AD2 #D257B7 #D2AF57 #57D271
split-complementary
#577AD2 #D27157 #B7D257
monochromatic
#25428A #3259BA #577AD2 #87A0DF #B8C6EC
Accessibility & contrast
On white
4.10
#577AD2 on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.12
#577AD2 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #577AD2
5.12:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##577AD2 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##577AD2 | 1.00 | 4.10 | 5.12 | 5.12 |
| #FFFFFF | 4.10 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.12 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.12 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#5383D5
Deuteranopia (green-blind)
#4378D0
Tritanopia (blue-blind)
#008E9C
Achromatopsia (no color)
#7D7D7D
Design tokens & code
CSS
--color: #577ad2; /* rgb */ color: rgb(87, 122, 210); /* oklch */ color: oklch(59.5% 0.140 266.0);
Tailwind
colors: {
custom: {
50: '#90a0e0',
500: '#577ad2',
950: '#000000',
},
}SCSS
$custom: #577ad2; $custom-light: #90a0e0; $custom-dark: #000000;
JSON
{
"hex": "#577ad2",
"rgb": {
"r": 87,
"g": 122,
"b": 210
},
"hsl": {
"h": 222.927,
"s": 57.746,
"l": 58.235
},
"oklch": {
"l": 0.59542,
"c": 0.14033,
"h": 266
},
"luminance": 0.20598
}Semantic roles & 50–950 ramp
primary
#577AD2
secondary
#DBCDAA
accent
#B547E1
background
#F9F9FD
surface
#F2F2FB
border
#CCCCD4
text
#0D0E15
muted
#7E7E83