#3738CD#3738CD
#3738CD is a mid, highly saturated blue. Relative luminance 0.080; OKLCH L 45.2% C 0.221 H 272.9°. Best body text is #FFFFFF at 8.05:1 contrast (WCAG AA passes).
Color values
| HEX | #3738CD |
|---|---|
| RGB | rgb(55, 56, 205) |
| HSL | hsl(240, 60%, 51%) |
| HSV | hsv(240, 73%, 80%) |
| CMYK | cmyk(73.2%, 72.7%, 0%, 19.6%) |
| CIE-LAB | lab(34.08, 48.23, -76.30) |
| CIE-LCH | lch(34.08, 90.27, 302.30°) |
| OKLab | oklab(45.21% 0.0111 -0.2208) |
| OKLCH | oklch(45.21% 0.221 272.9) |
| XYZ | xyz(14.0055, 8.0469, 58.5609) |
| Luminance | 0.0805 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Blue With A Hint Of Purple
#533CC6
ΔE00 3.31
Blurple
#5539CC
ΔE00 3.45
Blue Blue
#2242C7
ΔE00 3.68
Blue (survey)
#0343DF
ΔE00 4.33
Ocean Blue
#4F42B5
ΔE00 4.57
Vibrant Blue
#0339F8
ΔE00 4.94
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3738CD #CDCC37
analogous
#3783CD #3738CD #8137CD
triadic
#3738CD #CD3738 #38CD37
tetradic
#3738CD #CD3783 #CDCC37 #37CD81
square
#3738CD #CD3783 #CDCC37 #37CD81
split-complementary
#3738CD #CD8137 #83CD37
monochromatic
#1C1C6E #28299F #3738CD #6869D9 #9999E5
Accessibility & contrast
On white
8.05
#3738CD on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.61
#3738CD on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3738CD
8.05:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3738CD | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3738CD | 1.00 | 8.05 | 2.61 | 8.05 |
| #FFFFFF | 8.05 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.61 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.05 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0057D1
Deuteranopia (green-blind)
#0049CA
Tritanopia (blue-blind)
#00637F
Achromatopsia (no color)
#505050
Design tokens & code
CSS
--color: #3738cd; /* rgb */ color: rgb(55, 56, 205); /* oklch */ color: oklch(45.2% 0.221 272.9);
Tailwind
colors: {
custom: {
50: '#8570de',
500: '#3738cd',
950: '#000000',
},
}SCSS
$custom: #3738cd; $custom-light: #8570de; $custom-dark: #000000;
JSON
{
"hex": "#3738cd",
"rgb": {
"r": 55,
"g": 56,
"b": 205
},
"hsl": {
"h": 239.6,
"s": 60,
"l": 50.98
},
"oklch": {
"l": 0.45213,
"c": 0.22105,
"h": 272.9
},
"luminance": 0.08048
}Semantic roles & 50–950 ramp
primary
#3738CD
secondary
#D1D18F
accent
#E245E3
background
#F9F6FD
surface
#F1ECFB
border
#CBC7D4
text
#0D0815
muted
#7E7B83