#557DEC#557DEC
#557DEC is a mid, vivid blue. Relative luminance 0.227; OKLCH L 61.7% C 0.173 H 266.5°. Best body text is #000000 at 5.53:1 contrast (WCAG AA passes).
Color values
| HEX | #557DEC |
|---|---|
| RGB | rgb(85, 125, 236) |
| HSL | hsl(224, 80%, 63%) |
| HSV | hsv(224, 64%, 93%) |
| CMYK | cmyk(64%, 47%, 0%, 7.5%) |
| CIE-LAB | lab(54.71, 20.67, -60.29) |
| CIE-LCH | lch(54.71, 63.74, 288.93°) |
| OKLab | oklab(61.69% -0.0106 -0.1725) |
| OKLCH | oklch(61.69% 0.173 266.5) |
| XYZ | xyz(26.2150, 22.6522, 82.3314) |
| Luminance | 0.2266 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Lightish Blue
#3D7AFD
ΔE00 2.51
Dodger Blue
#3E82FC
ΔE00 3.47
Soft Blue
#6488EA
ΔE00 3.63
Clear Blue
#247AFD
ΔE00 3.86
Cornflower
#6A79F7
ΔE00 4.44
Deep Sky Blue
#0D75F8
ΔE00 4.96
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#557DEC #ECC455
analogous
#55C8EC #557DEC #7855EC
triadic
#557DEC #EC557D #7DEC55
tetradic
#557DEC #EC55C8 #ECC455 #55EC78
square
#557DEC #EC55C8 #ECC455 #55EC78
split-complementary
#557DEC #EC7855 #C8EC55
monochromatic
#143EB3 #1E53E6 #557DEC #8CA7F2 #C3D1F8
Accessibility & contrast
On white
3.80
#557DEC on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.53
#557DEC on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #557DEC
5.53:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##557DEC | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##557DEC | 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)
#448AF0
Deuteranopia (green-blind)
#257CEA
Tritanopia (blue-blind)
#0097A9
Achromatopsia (no color)
#838383
Design tokens & code
CSS
--color: #557dec; /* rgb */ color: rgb(85, 125, 236); /* oklch */ color: oklch(61.7% 0.173 266.5);
Tailwind
colors: {
custom: {
50: '#93a2f3',
500: '#557dec',
950: '#000000',
},
}SCSS
$custom: #557dec; $custom-light: #93a2f3; $custom-dark: #000000;
JSON
{
"hex": "#557dec",
"rgb": {
"r": 85,
"g": 125,
"b": 236
},
"hsl": {
"h": 224.106,
"s": 79.894,
"l": 62.941
},
"oklch": {
"l": 0.61692,
"c": 0.17288,
"h": 266.5
},
"luminance": 0.22655
}Semantic roles & 50–950 ramp
primary
#557DEC
secondary
#EADBB3
accent
#A409DC
background
#F9F9FE
surface
#F2F2FD
border
#CCCCD5
text
#0E0F17
muted
#7E7E85