#377FDF#377FDF
#377FDF is a mid, vivid cyan. Relative luminance 0.213; OKLCH L 60.0% C 0.163 H 256.8°. Best body text is #000000 at 5.26:1 contrast (WCAG AA passes).
Color values
| HEX | #377FDF |
|---|---|
| RGB | rgb(55, 127, 223) |
| HSL | hsl(214, 72%, 55%) |
| HSV | hsv(214, 75%, 87%) |
| CMYK | cmyk(75.3%, 43%, 0%, 12.5%) |
| CIE-LAB | lab(53.29, 10.53, -55.36) |
| CIE-LCH | lch(53.29, 56.35, 280.77°) |
| OKLab | oklab(60.02% -0.0372 -0.1585) |
| OKLCH | oklch(60.02% 0.163 256.8) |
| XYZ | xyz(22.4793, 21.3161, 72.7274) |
| Luminance | 0.2132 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Azure
#007FFF
ΔE00 2.85
Clear Blue
#247AFD
ΔE00 3.54
Dodger Blue
#3E82FC
ΔE00 3.88
Deep Sky Blue
#0D75F8
ΔE00 4.05
Windows Blue
#3778BF
ΔE00 4.35
Cool Blue
#4984B8
ΔE00 4.54
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#377FDF #DF9737
analogous
#37D3DF #377FDF #4337DF
triadic
#377FDF #DF377F #7FDF37
tetradic
#377FDF #DF37D3 #DF9737 #37DF43
square
#377FDF #DF37D3 #DF9737 #37DF43
split-complementary
#377FDF #DF4337 #D3DF37
monochromatic
#154686 #1E61BB #377FDF #6CA1E7 #A1C3F0
Accessibility & contrast
On white
3.99
#377FDF on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.26
#377FDF on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #377FDF
5.26:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##377FDF | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##377FDF | 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)
#4F88E3
Deuteranopia (green-blind)
#2F78DD
Tritanopia (blue-blind)
#0096A4
Achromatopsia (no color)
#7F7F7F
Design tokens & code
CSS
--color: #377fdf; /* rgb */ color: rgb(55, 127, 223); /* oklch */ color: oklch(60.0% 0.163 256.8);
Tailwind
colors: {
custom: {
50: '#84a3e9',
500: '#377fdf',
950: '#000000',
},
}SCSS
$custom: #377fdf; $custom-light: #84a3e9; $custom-dark: #000000;
JSON
{
"hex": "#377fdf",
"rgb": {
"r": 55,
"g": 127,
"b": 223
},
"hsl": {
"h": 214.286,
"s": 72.414,
"l": 54.51
},
"oklch": {
"l": 0.60024,
"c": 0.16281,
"h": 256.8
},
"luminance": 0.21319
}Semantic roles & 50–950 ramp
primary
#377FDF
secondary
#DCBE95
accent
#A139EF
background
#F8FAFE
surface
#F0F3FD
border
#CBCDD5
text
#0C0F16
muted
#7D7F84