#3640CF#3640CF
#3640CF is a mid, highly saturated blue. Relative luminance 0.090; OKLCH L 46.6% C 0.216 H 271.5°. Best body text is #FFFFFF at 7.52:1 contrast (WCAG AA passes).
Color values
| HEX | #3640CF |
|---|---|
| RGB | rgb(54, 64, 207) |
| HSL | hsl(236, 61%, 51%) |
| HSV | hsv(236, 74%, 81%) |
| CMYK | cmyk(73.9%, 69.1%, 0%, 18.8%) |
| CIE-LAB | lab(35.90, 44.17, -74.47) |
| CIE-LCH | lch(35.90, 86.58, 300.67°) |
| OKLab | oklab(46.56% 0.0057 -0.2155) |
| OKLCH | oklch(46.56% 0.216 271.5) |
| XYZ | xyz(14.6134, 8.9545, 59.9776) |
| Luminance | 0.0896 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Blue Blue
#2242C7
ΔE00 2.39
Blue (survey)
#0343DF
ΔE00 2.84
Blue With A Hint Of Purple
#533CC6
ΔE00 3.75
Blurple
#5539CC
ΔE00 4.15
Ocean Blue
#4F42B5
ΔE00 4.34
Vibrant Blue
#0339F8
ΔE00 4.63
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3640CF #CFC536
analogous
#368DCF #3640CF #7836CF
triadic
#3640CF #CF3640 #40CF36
tetradic
#3640CF #CF368D #CFC536 #36CF78
square
#3640CF #CF368D #CFC536 #36CF78
split-complementary
#3640CF #CF7836 #8DCF36
monochromatic
#1B2070 #272FA1 #3640CF #676FDB #999EE7
Accessibility & contrast
On white
7.52
#3640CF on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.79
#3640CF on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3640CF
7.52:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3640CF | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3640CF | 1.00 | 7.52 | 2.79 | 7.52 |
| #FFFFFF | 7.52 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.79 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.52 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#005CD3
Deuteranopia (green-blind)
#004DCC
Tritanopia (blue-blind)
#006783
Achromatopsia (no color)
#545454
Design tokens & code
CSS
--color: #3640cf; /* rgb */ color: rgb(54, 64, 207); /* oklch */ color: oklch(46.6% 0.216 271.5);
Tailwind
colors: {
custom: {
50: '#8475df',
500: '#3640cf',
950: '#000000',
},
}SCSS
$custom: #3640cf; $custom-light: #8475df; $custom-dark: #000000;
JSON
{
"hex": "#3640cf",
"rgb": {
"r": 54,
"g": 64,
"b": 207
},
"hsl": {
"h": 236.078,
"s": 61.446,
"l": 51.176
},
"oklch": {
"l": 0.46559,
"c": 0.21556,
"h": 271.5
},
"luminance": 0.08956
}Semantic roles & 50–950 ramp
primary
#3640CF
secondary
#D2CE8F
accent
#DA43E5
background
#F8F7FD
surface
#F0EDFB
border
#CBC8D4
text
#0D0815
muted
#7D7B83