#3864B8#3864B8
#3864B8 is a mid, vivid blue. Relative luminance 0.134; OKLCH L 51.6% C 0.141 H 261.9°. Best body text is #FFFFFF at 5.70:1 contrast (WCAG AA passes).
Color values
| HEX | #3864B8 |
|---|---|
| RGB | rgb(56, 100, 184) |
| HSL | hsl(219, 53%, 47%) |
| HSV | hsv(219, 70%, 72%) |
| CMYK | cmyk(69.6%, 45.7%, 0%, 27.8%) |
| CIE-LAB | lab(43.38, 13.26, -48.93) |
| CIE-LCH | lch(43.38, 50.69, 285.17°) |
| OKLab | oklab(51.63% -0.0199 -0.14) |
| OKLCH | oklch(51.63% 0.141 261.9) |
| XYZ | xyz(14.8367, 13.4143, 47.1454) |
| Luminance | 0.1342 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
French Blue
#436BAD
ΔE00 2.73
Denim
#1560BD
ΔE00 2.80
Mid Blue
#276AB3
ΔE00 4.06
Medium Blue
#2C6FBB
ΔE00 4.95
Denim (survey)
#3B638C
ΔE00 5.38
Denim Blue
#3B5B92
ΔE00 5.53
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3864B8 #B88C38
analogous
#38A4B8 #3864B8 #4C38B8
triadic
#3864B8 #B83864 #64B838
tetradic
#3864B8 #B838A4 #B88C38 #38B84C
square
#3864B8 #B838A4 #B88C38 #38B84C
split-complementary
#3864B8 #B84C38 #A4B838
monochromatic
#1B315A #2A4B89 #3864B8 #5F85CE #8EA9DD
Accessibility & contrast
On white
5.70
#3864B8 on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.68
#3864B8 on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #3864B8
5.70:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3864B8 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3864B8 | 1.00 | 5.70 | 3.68 | 5.70 |
| #FFFFFF | 5.70 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.68 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.70 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#3A6DBB
Deuteranopia (green-blind)
#2161B6
Tritanopia (blue-blind)
#007885
Achromatopsia (no color)
#666666
Design tokens & code
CSS
--color: #3864b8; /* rgb */ color: rgb(56, 100, 184); /* oklch */ color: oklch(51.6% 0.141 261.9);
Tailwind
colors: {
custom: {
50: '#7d8fce',
500: '#3864b8',
950: '#000000',
},
}SCSS
$custom: #3864b8; $custom-light: #7d8fce; $custom-dark: #000000;
JSON
{
"hex": "#3864b8",
"rgb": {
"r": 56,
"g": 100,
"b": 184
},
"hsl": {
"h": 219.375,
"s": 53.333,
"l": 47.059
},
"oklch": {
"l": 0.51625,
"c": 0.14144,
"h": 261.9
},
"luminance": 0.13416
}Semantic roles & 50–950 ramp
primary
#3864B8
secondary
#C7B085
accent
#AB4BDD
background
#F8F8FC
surface
#EFF0F9
border
#CACBD2
text
#0B0C13
muted
#7C7D82