#3774CC#3774CC
#3774CC is a mid, vivid blue. Relative luminance 0.177; OKLCH L 56.4% C 0.150 H 257.9°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).
Color values
| HEX | #3774CC |
|---|---|
| RGB | rgb(55, 116, 204) |
| HSL | hsl(215, 59%, 51%) |
| HSV | hsv(215, 73%, 80%) |
| CMYK | cmyk(73%, 43.1%, 0%, 20%) |
| CIE-LAB | lab(49.08, 10.36, -51.34) |
| CIE-LCH | lch(49.08, 52.37, 281.41°) |
| OKLab | oklab(56.4% -0.0315 -0.1469) |
| OKLCH | oklch(56.4% 0.15 257.9) |
| XYZ | xyz(18.7160, 17.6606, 59.5375) |
| Luminance | 0.1766 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Windows Blue
#3778BF
ΔE00 2.51
Medium Blue
#2C6FBB
ΔE00 3.14
Bluish
#2976BB
ΔE00 3.80
Cerulean Blue
#056EEE
ΔE00 3.83
Flat Blue
#3C73A8
ΔE00 4.22
Deep Sky Blue
#0D75F8
ΔE00 4.43
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3774CC #CC8F37
analogous
#37BFCC #3774CC #4437CC
triadic
#3774CC #CC3774 #74CC37
tetradic
#3774CC #CC37BF #CC8F37 #37CC44
square
#3774CC #CC37BF #CC8F37 #37CC44
split-complementary
#3774CC #CC4437 #BFCC37
monochromatic
#1C3D6D #28589E #3774CC #6896D8 #99B8E5
Accessibility & contrast
On white
4.63
#3774CC on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
4.53
#3774CC on #000000
AA ✓AA large ✓AAA ✗
Best text color
#FFFFFF on #3774CC
4.63:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3774CC | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3774CC | 1.00 | 4.63 | 4.53 | 4.63 |
| #FFFFFF | 4.63 | 1.00 | 21.00 | 1.00 |
| #000000 | 4.53 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 4.63 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#497CCF
Deuteranopia (green-blind)
#2D6ECA
Tritanopia (blue-blind)
#008996
Achromatopsia (no color)
#757575
Design tokens & code
CSS
--color: #3774cc; /* rgb */ color: rgb(55, 116, 204); /* oklch */ color: oklch(56.4% 0.150 257.9);
Tailwind
colors: {
custom: {
50: '#819bdc',
500: '#3774cc',
950: '#000000',
},
}SCSS
$custom: #3774cc; $custom-light: #819bdc; $custom-dark: #000000;
JSON
{
"hex": "#3774cc",
"rgb": {
"r": 55,
"g": 116,
"b": 204
},
"hsl": {
"h": 215.436,
"s": 59.363,
"l": 50.784
},
"oklch": {
"l": 0.56402,
"c": 0.15021,
"h": 257.9
},
"luminance": 0.17663
}Semantic roles & 50–950 ramp
primary
#3774CC
secondary
#D0B58E
accent
#A245E3
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0E15
muted
#7D7E83