#378DB6#378DB6
#378DB6 is a mid, moderate cyan. Relative luminance 0.232; OKLCH L 60.9% C 0.102 H 232.8°. Best body text is #000000 at 5.65:1 contrast (WCAG AA passes).
Color values
| HEX | #378DB6 |
|---|---|
| RGB | rgb(55, 141, 182) |
| HSL | hsl(199, 54%, 46%) |
| HSV | hsv(199, 70%, 71%) |
| CMYK | cmyk(69.8%, 22.5%, 0%, 28.6%) |
| CIE-LAB | lab(55.32, -12.30, -28.94) |
| CIE-LCH | lch(55.32, 31.44, 246.98°) |
| OKLab | oklab(60.94% -0.0618 -0.0813) |
| OKLCH | oklch(60.94% 0.102 232.8) |
| XYZ | xyz(19.5406, 23.2372, 47.7023) |
| Luminance | 0.2324 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Dirty Blue
#3F829D
ΔE00 5.48
Water Blue
#0E87CC
ΔE00 5.93
Steel Blue
#4682B4
ΔE00 6.19
Dusty Blue
#5A86AD
ΔE00 6.29
Cool Blue
#4984B8
ΔE00 6.29
Off Blue
#5684AE
ΔE00 6.58
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#378DB6 #B66037
analogous
#37B6A0 #378DB6 #374EB6
triadic
#378DB6 #B6378D #8DB637
tetradic
#378DB6 #A037B6 #B66037 #4EB637
square
#378DB6 #A037B6 #B66037 #4EB637
split-complementary
#378DB6 #B6374E #B6A037
monochromatic
#1B4458 #296987 #378DB6 #5CA9CE #8BC2DC
Accessibility & contrast
On white
3.72
#378DB6 on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.65
#378DB6 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #378DB6
5.65:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##378DB6 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##378DB6 | 1.00 | 3.72 | 5.65 | 5.65 |
| #FFFFFF | 3.72 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.65 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.65 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#798CB8
Deuteranopia (green-blind)
#677FB5
Tritanopia (blue-blind)
#00989B
Achromatopsia (no color)
#848484
Design tokens & code
CSS
--color: #378db6; /* rgb */ color: rgb(55, 141, 182); /* oklch */ color: oklch(60.9% 0.102 232.8);
Tailwind
colors: {
custom: {
50: '#7daecc',
500: '#378db6',
950: '#000000',
},
}SCSS
$custom: #378db6; $custom-light: #7daecc; $custom-dark: #000000;
JSON
{
"hex": "#378db6",
"rgb": {
"r": 55,
"g": 141,
"b": 182
},
"hsl": {
"h": 199.37,
"s": 53.586,
"l": 46.471
},
"oklch": {
"l": 0.60943,
"c": 0.10209,
"h": 232.8
},
"luminance": 0.23239
}Semantic roles & 50–950 ramp
primary
#378DB6
secondary
#C69882
accent
#7A4BDD
background
#F8FAFC
surface
#EFF4F8
border
#CACED1
text
#0B1013
muted
#7C7F82