#377FAD#377FAD
#377FAD is a mid, moderate cyan. Relative luminance 0.190; OKLCH L 57.1% C 0.101 H 239.9°. Best body text is #000000 at 4.80:1 contrast (WCAG AA passes).
Color values
| HEX | #377FAD |
|---|---|
| RGB | rgb(55, 127, 173) |
| HSL | hsl(203, 52%, 45%) |
| HSV | hsv(203, 68%, 68%) |
| CMYK | cmyk(68.2%, 26.6%, 0%, 32.2%) |
| CIE-LAB | lab(50.69, -7.40, -30.96) |
| CIE-LCH | lch(50.69, 31.83, 256.55°) |
| OKLab | oklab(57.14% -0.0504 -0.0872) |
| OKLCH | oklch(57.14% 0.101 239.9) |
| XYZ | xyz(16.7048, 19.0063, 42.3153) |
| Luminance | 0.1901 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Nice Blue
#107AB0
ΔE00 2.85
Steel Blue
#4682B4
ΔE00 2.85
Cool Blue
#4984B8
ΔE00 3.75
Stormy Blue
#507B9C
ΔE00 4.04
Cerulean
#007BA7
ΔE00 4.11
Off Blue
#5684AE
ΔE00 4.56
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#377FAD #AD6537
analogous
#37ADA0 #377FAD #3744AD
triadic
#377FAD #AD377F #7FAD37
tetradic
#377FAD #A037AD #AD6537 #44AD37
square
#377FAD #A037AD #AD6537 #44AD37
split-complementary
#377FAD #AD3744 #ADA037
monochromatic
#193B50 #285D7F #377FAD #579DCA #86B8D8
Accessibility & contrast
On white
4.37
#377FAD on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
4.80
#377FAD on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #377FAD
4.80:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##377FAD | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##377FAD | 1.00 | 4.37 | 4.80 | 4.80 |
| #FFFFFF | 4.37 | 1.00 | 21.00 | 21.00 |
| #000000 | 4.80 | 21.00 | 1.00 | 1.00 |
| ##000000 | 4.80 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#6A7FAF
Deuteranopia (green-blind)
#5A74AC
Tritanopia (blue-blind)
#008B8F
Achromatopsia (no color)
#797979
Design tokens & code
CSS
--color: #377fad; /* rgb */ color: rgb(55, 127, 173); /* oklch */ color: oklch(57.1% 0.101 239.9);
Tailwind
colors: {
custom: {
50: '#7ba4c5',
500: '#377fad',
950: '#000000',
},
}SCSS
$custom: #377fad; $custom-light: #7ba4c5; $custom-dark: #000000;
JSON
{
"hex": "#377fad",
"rgb": {
"r": 55,
"g": 127,
"b": 173
},
"hsl": {
"h": 203.39,
"s": 51.754,
"l": 44.706
},
"oklch": {
"l": 0.57141,
"c": 0.10074,
"h": 239.9
},
"luminance": 0.19008
}Semantic roles & 50–950 ramp
primary
#377FAD
secondary
#C2987D
accent
#844DDB
background
#F8FAFC
surface
#EFF3F8
border
#CACDD1
text
#0A0F13
muted
#7C7F82