#278FAB#278FAB
#278FAB is a mid, moderate cyan. Relative luminance 0.230; OKLCH L 60.5% C 0.099 H 220.4°. Best body text is #000000 at 5.60:1 contrast (WCAG AA passes).
Color values
| HEX | #278FAB |
|---|---|
| RGB | rgb(39, 143, 171) |
| HSL | hsl(193, 63%, 41%) |
| HSV | hsv(193, 77%, 67%) |
| CMYK | cmyk(77.2%, 16.4%, 0%, 32.9%) |
| CIE-LAB | lab(55.09, -19.24, -23.04) |
| CIE-LCH | lch(55.09, 30.02, 230.13°) |
| OKLab | oklab(60.5% -0.0757 -0.0644) |
| OKLCH | oklch(60.5% 0.099 220.4) |
| XYZ | xyz(18.0068, 23.0143, 42.0134) |
| Luminance | 0.2302 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Teal Blue
#01889F
ΔE00 3.77
Dirty Blue
#3F829D
ΔE00 5.25
Ocean
#017B92
ΔE00 7.89
Cerulean
#007BA7
ΔE00 9.09
Greyish Blue
#5E819D
ΔE00 10.16
Dusty Blue
#5A86AD
ΔE00 10.30
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#278FAB #AB4327
analogous
#27AB85 #278FAB #274DAB
triadic
#278FAB #AB278F #8FAB27
tetradic
#278FAB #8527AB #AB4327 #4DAB27
square
#278FAB #8527AB #AB4327 #4DAB27
split-complementary
#278FAB #AB274D #AB8527
monochromatic
#103C47 #1C6579 #278FAB #3DB3D3 #6EC6DE
Accessibility & contrast
On white
3.75
#278FAB on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.60
#278FAB on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #278FAB
5.60:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##278FAB | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##278FAB | 1.00 | 3.75 | 5.60 | 5.60 |
| #FFFFFF | 3.75 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.60 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.60 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#7E8BAC
Deuteranopia (green-blind)
#6C7EAB
Tritanopia (blue-blind)
#009898
Achromatopsia (no color)
#848484
Design tokens & code
CSS
--color: #278fab; /* rgb */ color: rgb(39, 143, 171); /* oklch */ color: oklch(60.5% 0.099 220.4);
Tailwind
colors: {
custom: {
50: '#76b0c4',
500: '#278fab',
950: '#000000',
},
}SCSS
$custom: #278fab; $custom-light: #76b0c4; $custom-dark: #000000;
JSON
{
"hex": "#278fab",
"rgb": {
"r": 39,
"g": 143,
"b": 171
},
"hsl": {
"h": 192.727,
"s": 62.857,
"l": 41.176
},
"oklch": {
"l": 0.605,
"c": 0.09944,
"h": 220.4
},
"luminance": 0.23017
}Semantic roles & 50–950 ramp
primary
#278FAB
secondary
#C57D69
accent
#6542E6
background
#F7FAFC
surface
#EEF4F8
border
#C9CED1
text
#0A1012
muted
#7C7F81