#3583CB#3583CB
#3583CB is a mid, vivid cyan. Relative luminance 0.213; OKLCH L 59.6% C 0.134 H 249.6°. Best body text is #000000 at 5.26:1 contrast (WCAG AA passes).
Color values
| HEX | #3583CB |
|---|---|
| RGB | rgb(53, 131, 203) |
| HSL | hsl(209, 59%, 50%) |
| HSV | hsv(209, 74%, 80%) |
| CMYK | cmyk(73.9%, 35.5%, 0%, 20.4%) |
| CIE-LAB | lab(53.28, 0.57, -44.10) |
| CIE-LCH | lch(53.28, 44.10, 270.74°) |
| OKLab | oklab(59.64% -0.0466 -0.1254) |
| OKLCH | oklch(59.64% 0.134 249.6) |
| XYZ | xyz(20.3599, 21.2990, 59.5264) |
| Luminance | 0.2130 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Cool Blue
#4984B8
ΔE00 2.39
Cerulean (survey)
#0485D1
ΔE00 2.62
Steel Blue
#4682B4
ΔE00 2.77
Water Blue
#0E87CC
ΔE00 3.51
Windows Blue
#3778BF
ΔE00 4.28
Off Blue
#5684AE
ΔE00 4.34
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3583CB #CB7D35
analogous
#35CBC8 #3583CB #3538CB
triadic
#3583CB #CB3583 #83CB35
tetradic
#3583CB #C835CB #CB7D35 #38CB35
square
#3583CB #C835CB #CB7D35 #38CB35
split-complementary
#3583CB #CB3538 #CBC835
monochromatic
#1B446A #28649B #3583CB #66A1D8 #96BFE4
Accessibility & contrast
On white
3.99
#3583CB on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.26
#3583CB on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #3583CB
5.26:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3583CB | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##3583CB | 1.00 | 3.99 | 5.26 | 5.26 |
| #FFFFFF | 3.99 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.26 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.26 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#6287CE
Deuteranopia (green-blind)
#4C79CA
Tritanopia (blue-blind)
#00949D
Achromatopsia (no color)
#7F7F7F
Design tokens & code
CSS
--color: #3583cb; /* rgb */ color: rgb(53, 131, 203); /* oklch */ color: oklch(59.6% 0.134 249.6);
Tailwind
colors: {
custom: {
50: '#80a6db',
500: '#3583cb',
950: '#000000',
},
}SCSS
$custom: #3583cb; $custom-light: #80a6db; $custom-dark: #000000;
JSON
{
"hex": "#3583cb",
"rgb": {
"r": 53,
"g": 131,
"b": 203
},
"hsl": {
"h": 208.8,
"s": 59.055,
"l": 50.196
},
"oklch": {
"l": 0.59635,
"c": 0.13378,
"h": 249.6
},
"luminance": 0.21301
}Semantic roles & 50–950 ramp
primary
#3583CB
secondary
#CFAD8C
accent
#9146E2
background
#F8FAFD
surface
#F0F4FB
border
#CBCED4
text
#0C0F15
muted
#7D7F83