#4089CF#4089CF
#4089CF is a mid, vivid cyan. Relative luminance 0.235; OKLCH L 61.6% C 0.129 H 249.9°. Best body text is #000000 at 5.70:1 contrast (WCAG AA passes).
Color values
| HEX | #4089CF |
|---|---|
| RGB | rgb(64, 137, 207) |
| HSL | hsl(209, 60%, 53%) |
| HSV | hsv(209, 69%, 81%) |
| CMYK | cmyk(69.1%, 33.8%, 0%, 18.8%) |
| CIE-LAB | lab(55.57, -0.01, -42.71) |
| CIE-LCH | lch(55.57, 42.71, 269.98°) |
| OKLab | oklab(61.6% -0.0444 -0.1212) |
| OKLCH | oklch(61.6% 0.129 249.9) |
| XYZ | xyz(22.3183, 23.4839, 62.3760) |
| Luminance | 0.2349 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Dark Sky Blue
#448EE4
ΔE00 2.94
Cool Blue
#4984B8
ΔE00 3.01
Cerulean (survey)
#0485D1
ΔE00 3.38
Steel Blue
#4682B4
ΔE00 3.83
Water Blue
#0E87CC
ΔE00 3.83
Off Blue
#5684AE
ΔE00 4.54
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#4089CF #CF8640
analogous
#40CFCE #4089CF #4041CF
triadic
#4089CF #CF4089 #89CF40
tetradic
#4089CF #CE40CF #CF8640 #41CF40
square
#4089CF #CE40CF #CF8640 #41CF40
split-complementary
#4089CF #CF4041 #CFCE40
monochromatic
#1E4B77 #2A6AA8 #4089CF #71A7DB #A2C5E8
Accessibility & contrast
On white
3.69
#4089CF on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.70
#4089CF on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #4089CF
5.70:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##4089CF | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##4089CF | 1.00 | 3.69 | 5.70 | 5.70 |
| #FFFFFF | 3.69 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.70 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.70 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#6A8DD2
Deuteranopia (green-blind)
#557FCE
Tritanopia (blue-blind)
#009AA2
Achromatopsia (no color)
#858585
Design tokens & code
CSS
--color: #4089cf; /* rgb */ color: rgb(64, 137, 207); /* oklch */ color: oklch(61.6% 0.129 249.9);
Tailwind
colors: {
custom: {
50: '#85abde',
500: '#4089cf',
950: '#000000',
},
}SCSS
$custom: #4089cf; $custom-light: #85abde; $custom-dark: #000000;
JSON
{
"hex": "#4089cf",
"rgb": {
"r": 64,
"g": 137,
"b": 207
},
"hsl": {
"h": 209.371,
"s": 59.833,
"l": 53.137
},
"oklch": {
"l": 0.61599,
"c": 0.12903,
"h": 249.9
},
"luminance": 0.23486
}Semantic roles & 50–950 ramp
primary
#4089CF
secondary
#D4B597
accent
#9245E3
background
#F8FAFD
surface
#F0F4FB
border
#CBCED4
text
#0C1015
muted
#7D7F83