#428ECE#428ECE
#428ECE is a light, vivid cyan. Relative luminance 0.250; OKLCH L 62.8% C 0.123 H 246.8°. Best body text is #000000 at 5.99:1 contrast (WCAG AA passes).
Color values
| HEX | #428ECE |
|---|---|
| RGB | rgb(66, 142, 206) |
| HSL | hsl(207, 59%, 53%) |
| HSV | hsv(207, 68%, 81%) |
| CMYK | cmyk(68%, 31.1%, 0%, 19.2%) |
| CIE-LAB | lab(57.03, -2.97, -39.83) |
| CIE-LCH | lch(57.03, 39.94, 265.73°) |
| OKLab | oklab(62.76% -0.0483 -0.1127) |
| OKLCH | oklch(62.76% 0.123 246.8) |
| XYZ | xyz(23.0561, 24.9580, 61.9828) |
| Luminance | 0.2496 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Dark Sky Blue
#448EE4
ΔE00 3.18
Water Blue
#0E87CC
ΔE00 3.76
Cerulean (survey)
#0485D1
ΔE00 3.91
Cool Blue
#4984B8
ΔE00 4.05
Dodgerblue
#1E90FF
ΔE00 4.55
Steel Blue
#4682B4
ΔE00 4.83
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#428ECE #CE8242
analogous
#42CEC8 #428ECE #4248CE
triadic
#428ECE #CE428E #8ECE42
tetradic
#428ECE #C842CE #CE8242 #48CE42
square
#428ECE #C842CE #CE8242 #48CE42
split-complementary
#428ECE #CE4248 #CEC842
monochromatic
#1F4F77 #2B6FA7 #428ECE #73ABDB #A3C8E7
Accessibility & contrast
On white
3.50
#428ECE on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.99
#428ECE on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #428ECE
5.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##428ECE | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##428ECE | 1.00 | 3.50 | 5.99 | 5.99 |
| #FFFFFF | 3.50 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.99 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.99 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#7190D1
Deuteranopia (green-blind)
#5E83CD
Tritanopia (blue-blind)
#009DA5
Achromatopsia (no color)
#898989
Design tokens & code
CSS
--color: #428ece; /* rgb */ color: rgb(66, 142, 206); /* oklch */ color: oklch(62.8% 0.123 246.8);
Tailwind
colors: {
custom: {
50: '#85aedd',
500: '#428ece',
950: '#000000',
},
}SCSS
$custom: #428ece; $custom-light: #85aedd; $custom-dark: #000000;
JSON
{
"hex": "#428ece",
"rgb": {
"r": 66,
"g": 142,
"b": 206
},
"hsl": {
"h": 207.429,
"s": 58.824,
"l": 53.333
},
"oklch": {
"l": 0.62756,
"c": 0.12259,
"h": 246.8
},
"luminance": 0.2496
}Semantic roles & 50–950 ramp
primary
#428ECE
secondary
#D4B398
accent
#8D46E2
background
#F8FAFD
surface
#F0F4FB
border
#CBCED4
text
#0C1015
muted
#7D7F83