#4287CF#4287CF
#4287CF is a mid, vivid cyan. Relative luminance 0.230; OKLCH L 61.2% C 0.130 H 251.6°. Best body text is #000000 at 5.60:1 contrast (WCAG AA passes).
Color values
| HEX | #4287CF |
|---|---|
| RGB | rgb(66, 135, 207) |
| HSL | hsl(211, 59%, 54%) |
| HSV | hsv(211, 68%, 81%) |
| CMYK | cmyk(68.1%, 34.8%, 0%, 18.8%) |
| CIE-LAB | lab(55.06, 1.48, -43.51) |
| CIE-LCH | lch(55.06, 43.53, 271.95°) |
| OKLab | oklab(61.22% -0.0411 -0.1235) |
| OKLCH | oklch(61.22% 0.13 251.6) |
| XYZ | xyz(22.1691, 22.9889, 62.2883) |
| Luminance | 0.2299 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Cool Blue
#4984B8
ΔE00 2.82
Dark Sky Blue
#448EE4
ΔE00 3.13
Steel Blue
#4682B4
ΔE00 3.65
Cerulean (survey)
#0485D1
ΔE00 3.80
Off Blue
#5684AE
ΔE00 4.26
Water Blue
#0E87CC
ΔE00 4.43
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#4287CF #CF8A42
analogous
#42CECF #4287CF #4342CF
triadic
#4287CF #CF4287 #87CF42
tetradic
#4287CF #CF42CE #CF8A42 #42CF43
square
#4287CF #CF42CE #CF8A42 #42CF43
split-complementary
#4287CF #CF4342 #CECF42
monochromatic
#1F4A78 #2B69A9 #4287CF #73A6DB #A4C5E8
Accessibility & contrast
On white
3.75
#4287CF on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.60
#4287CF on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #4287CF
5.60:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##4287CF | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##4287CF | 1.00 | 3.75 | 5.60 | 5.60 |
| #FFFFFF | 3.75 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.60 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.60 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#678BD2
Deuteranopia (green-blind)
#537ECE
Tritanopia (blue-blind)
#0098A1
Achromatopsia (no color)
#848484
Design tokens & code
CSS
--color: #4287cf; /* rgb */ color: rgb(66, 135, 207); /* oklch */ color: oklch(61.2% 0.130 251.6);
Tailwind
colors: {
custom: {
50: '#85a9de',
500: '#4287cf',
950: '#000000',
},
}SCSS
$custom: #4287cf; $custom-light: #85a9de; $custom-dark: #000000;
JSON
{
"hex": "#4287cf",
"rgb": {
"r": 66,
"g": 135,
"b": 207
},
"hsl": {
"h": 210.638,
"s": 59.494,
"l": 53.529
},
"oklch": {
"l": 0.61221,
"c": 0.13014,
"h": 251.6
},
"luminance": 0.22991
}Semantic roles & 50–950 ramp
primary
#4287CF
secondary
#D5B798
accent
#9645E3
background
#F8FAFD
surface
#F0F4FB
border
#CBCED4
text
#0C0F15
muted
#7D7F83