#3987CA#3987CA
#3987CA is a mid, vivid cyan. Relative luminance 0.225; OKLCH L 60.6% C 0.127 H 247.8°. Best body text is #000000 at 5.49:1 contrast (WCAG AA passes).
Color values
| HEX | #3987CA |
|---|---|
| RGB | rgb(57, 135, 202) |
| HSL | hsl(208, 58%, 51%) |
| HSV | hsv(208, 72%, 79%) |
| CMYK | cmyk(71.8%, 33.2%, 0%, 20.8%) |
| CIE-LAB | lab(54.51, -1.62, -41.57) |
| CIE-LCH | lch(54.51, 41.60, 267.77°) |
| OKLab | oklab(60.62% -0.0482 -0.1179) |
| OKLCH | oklch(60.62% 0.127 247.8) |
| XYZ | xyz(21.0079, 22.4597, 59.0937) |
| Luminance | 0.2246 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Cerulean (survey)
#0485D1
ΔE00 2.27
Cool Blue
#4984B8
ΔE00 2.41
Water Blue
#0E87CC
ΔE00 2.72
Steel Blue
#4682B4
ΔE00 3.02
Dark Sky Blue
#448EE4
ΔE00 4.18
Off Blue
#5684AE
ΔE00 4.33
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3987CA #CA7C39
analogous
#39CAC4 #3987CA #393ECA
triadic
#3987CA #CA3987 #87CA39
tetradic
#3987CA #C439CA #CA7C39 #3ECA39
square
#3987CA #C439CA #CA7C39 #3ECA39
split-complementary
#3987CA #CA393E #CAC439
monochromatic
#1D476C #2A679C #3987CA #69A4D7 #9AC2E4
Accessibility & contrast
On white
3.82
#3987CA on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.49
#3987CA on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #3987CA
5.49:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3987CA | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##3987CA | 1.00 | 3.82 | 5.49 | 5.49 |
| #FFFFFF | 3.82 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.49 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.49 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#698ACD
Deuteranopia (green-blind)
#547CC9
Tritanopia (blue-blind)
#00979F
Achromatopsia (no color)
#828282
Design tokens & code
CSS
--color: #3987ca; /* rgb */ color: rgb(57, 135, 202); /* oklch */ color: oklch(60.6% 0.127 247.8);
Tailwind
colors: {
custom: {
50: '#81a9da',
500: '#3987ca',
950: '#000000',
},
}SCSS
$custom: #3987ca; $custom-light: #81a9da; $custom-dark: #000000;
JSON
{
"hex": "#3987ca",
"rgb": {
"r": 57,
"g": 135,
"b": 202
},
"hsl": {
"h": 207.724,
"s": 57.769,
"l": 50.784
},
"oklch": {
"l": 0.60624,
"c": 0.12741,
"h": 247.8
},
"luminance": 0.22462
}Semantic roles & 50–950 ramp
primary
#3987CA
secondary
#D0AD8F
accent
#8E47E1
background
#F8FAFD
surface
#F0F4FB
border
#CBCED4
text
#0C0F15
muted
#7D7F83