#557EB0#557EB0
#557EB0 is a mid, moderate cyan. Relative luminance 0.200; OKLCH L 58.4% C 0.090 H 254.0°. Best body text is #000000 at 5.00:1 contrast (WCAG AA passes).
Color values
| HEX | #557EB0 |
|---|---|
| RGB | rgb(85, 126, 176) |
| HSL | hsl(213, 37%, 51%) |
| HSV | hsv(213, 52%, 69%) |
| CMYK | cmyk(51.7%, 28.4%, 0%, 31%) |
| CIE-LAB | lab(51.82, 0.23, -30.84) |
| CIE-LCH | lch(51.82, 30.84, 270.42°) |
| OKLab | oklab(58.43% -0.0248 -0.0865) |
| OKLCH | oklch(58.43% 0.09 254) |
| XYZ | xyz(19.0409, 19.9862, 43.9202) |
| Luminance | 0.1999 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Off Blue
#5684AE
ΔE00 2.96
Cool Blue
#4984B8
ΔE00 3.71
Dusty Blue
#5A86AD
ΔE00 3.72
Steel Blue
#4682B4
ΔE00 3.72
Windows Blue
#3778BF
ΔE00 4.07
Stormy Blue
#507B9C
ΔE00 4.67
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#557EB0 #B08755
analogous
#55ABB0 #557EB0 #5955B0
triadic
#557EB0 #B0557E #7EB055
tetradic
#557EB0 #B055AB #B08755 #55B059
square
#557EB0 #B055AB #B08755 #55B059
split-complementary
#557EB0 #B05955 #ABB055
monochromatic
#2C435F #3F6088 #557EB0 #7F9EC3 #A9BDD7
Accessibility & contrast
On white
4.20
#557EB0 on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.00
#557EB0 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #557EB0
5.00:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##557EB0 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##557EB0 | 1.00 | 4.20 | 5.00 | 5.00 |
| #FFFFFF | 4.20 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.00 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.00 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#6A80B2
Deuteranopia (green-blind)
#5F78AF
Tritanopia (blue-blind)
#27898F
Achromatopsia (no color)
#7C7C7C
Design tokens & code
CSS
--color: #557eb0; /* rgb */ color: rgb(85, 126, 176); /* oklch */ color: oklch(58.4% 0.090 254.0);
Tailwind
colors: {
custom: {
50: '#8aa3c7',
500: '#557eb0',
950: '#000000',
},
}SCSS
$custom: #557eb0; $custom-light: #8aa3c7; $custom-dark: #000000;
JSON
{
"hex": "#557eb0",
"rgb": {
"r": 85,
"g": 126,
"b": 176
},
"hsl": {
"h": 212.967,
"s": 36.546,
"l": 51.176
},
"oklch": {
"l": 0.58426,
"c": 0.08996,
"h": 254
},
"luminance": 0.19988
}Semantic roles & 50–950 ramp
primary
#557EB0
secondary
#C5B29C
accent
#9A5BCD
background
#F8FAFC
surface
#F0F3F8
border
#CBCDD1
text
#0C0F13
muted
#7D7F82