#3738B8#3738B8
#3738B8 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 43.1% C 0.195 H 274.2°. Best body text is #FFFFFF at 8.68:1 contrast (WCAG AA passes).
Color values
| HEX | #3738B8 |
|---|---|
| RGB | rgb(55, 56, 184) |
| HSL | hsl(240, 54%, 47%) |
| HSV | hsv(240, 70%, 72%) |
| CMYK | cmyk(70.1%, 69.6%, 0%, 27.8%) |
| CIE-LAB | lab(32.03, 41.25, -67.36) |
| CIE-LCH | lch(32.03, 78.98, 301.48°) |
| OKLab | oklab(43.13% 0.0143 -0.1947) |
| OKLCH | oklch(43.13% 0.195 274.2) |
| XYZ | xyz(11.6386, 7.1002, 46.0952) |
| Luminance | 0.0710 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 3.14
Ocean Blue
#4F42B5
ΔE00 3.85
Blue Blue
#2242C7
ΔE00 3.91
Blue With A Hint Of Purple
#533CC6
ΔE00 4.27
Blurple
#5539CC
ΔE00 4.88
Blue (survey)
#0343DF
ΔE00 6.01
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3738B8 #B8B737
analogous
#3779B8 #3738B8 #7737B8
triadic
#3738B8 #B83738 #38B837
tetradic
#3738B8 #B83779 #B8B737 #37B877
square
#3738B8 #B83779 #B8B737 #37B877
split-complementary
#3738B8 #B87737 #79B837
monochromatic
#1B1B5A #292A89 #3738B8 #5D5ECF #8D8DDD
Accessibility & contrast
On white
8.68
#3738B8 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.42
#3738B8 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3738B8
8.68:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3738B8 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3738B8 | 1.00 | 8.68 | 2.42 | 8.68 |
| #FFFFFF | 8.68 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.42 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.68 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0051BC
Deuteranopia (green-blind)
#0045B6
Tritanopia (blue-blind)
#005B74
Achromatopsia (no color)
#4B4B4B
Design tokens & code
CSS
--color: #3738b8; /* rgb */ color: rgb(55, 56, 184); /* oklch */ color: oklch(43.1% 0.195 274.2);
Tailwind
colors: {
custom: {
50: '#806fce',
500: '#3738b8',
950: '#000000',
},
}SCSS
$custom: #3738b8; $custom-light: #806fce; $custom-dark: #000000;
JSON
{
"hex": "#3738b8",
"rgb": {
"r": 55,
"g": 56,
"b": 184
},
"hsl": {
"h": 239.535,
"s": 53.975,
"l": 46.863
},
"oklch": {
"l": 0.43132,
"c": 0.1952,
"h": 274.2
},
"luminance": 0.07101
}Semantic roles & 50–950 ramp
primary
#3738B8
secondary
#C7C784
accent
#DC4ADD
background
#F8F6FC
surface
#F0ECF9
border
#CBC7D2
text
#0C0714
muted
#7D7A82