#3977CA#3977CA
#3977CA is a mid, vivid cyan. Relative luminance 0.183; OKLCH L 57.0% C 0.144 H 256.6°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).
Color values
| HEX | #3977CA |
|---|---|
| RGB | rgb(57, 119, 202) |
| HSL | hsl(214, 58%, 51%) |
| HSV | hsv(214, 72%, 79%) |
| CMYK | cmyk(71.8%, 41.1%, 0%, 20.8%) |
| CIE-LAB | lab(49.89, 8.05, -48.90) |
| CIE-LCH | lch(49.89, 49.56, 279.34°) |
| OKLab | oklab(57.01% -0.0332 -0.1396) |
| OKLCH | oklch(57.01% 0.144 256.6) |
| XYZ | xyz(18.9409, 18.3257, 58.4046) |
| Luminance | 0.1833 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Windows Blue
#3778BF
ΔE00 1.73
Bluish
#2976BB
ΔE00 3.36
Medium Blue
#2C6FBB
ΔE00 3.63
Flat Blue
#3C73A8
ΔE00 4.20
Deep Sky Blue
#0D75F8
ΔE00 4.52
Cerulean Blue
#056EEE
ΔE00 4.54
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3977CA #CA8C39
analogous
#39BFCA #3977CA #4339CA
triadic
#3977CA #CA3977 #77CA39
tetradic
#3977CA #CA39BF #CA8C39 #39CA43
square
#3977CA #CA39BF #CA8C39 #39CA43
split-complementary
#3977CA #CA4339 #BFCA39
monochromatic
#1D3F6C #2A5B9C #3977CA #6998D7 #9AB9E4
Accessibility & contrast
On white
4.50
#3977CA on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
4.67
#3977CA on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #3977CA
4.67:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3977CA | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##3977CA | 1.00 | 4.50 | 4.67 | 4.67 |
| #FFFFFF | 4.50 | 1.00 | 21.00 | 21.00 |
| #000000 | 4.67 | 21.00 | 1.00 | 1.00 |
| ##000000 | 4.67 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#507ECD
Deuteranopia (green-blind)
#3870C8
Tritanopia (blue-blind)
#008A96
Achromatopsia (no color)
#777777
Design tokens & code
CSS
--color: #3977ca; /* rgb */ color: rgb(57, 119, 202); /* oklch */ color: oklch(57.0% 0.144 256.6);
Tailwind
colors: {
custom: {
50: '#819dda',
500: '#3977ca',
950: '#000000',
},
}SCSS
$custom: #3977ca; $custom-light: #819dda; $custom-dark: #000000;
JSON
{
"hex": "#3977ca",
"rgb": {
"r": 57,
"g": 119,
"b": 202
},
"hsl": {
"h": 214.345,
"s": 57.769,
"l": 50.784
},
"oklch": {
"l": 0.5701,
"c": 0.14354,
"h": 256.6
},
"luminance": 0.18328
}Semantic roles & 50–950 ramp
primary
#3977CA
secondary
#D0B48F
accent
#9F47E1
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0E15
muted
#7D7E83