#3927B1#3927B1
#3927B1 is a dark, highly saturated blue. Relative luminance 0.055; OKLCH L 40.2% C 0.203 H 277.9°. Best body text is #FFFFFF at 10.00:1 contrast (WCAG AA passes).
Color values
| HEX | #3927B1 |
|---|---|
| RGB | rgb(57, 39, 177) |
| HSL | hsl(248, 64%, 42%) |
| HSV | hsv(248, 78%, 69%) |
| CMYK | cmyk(67.8%, 78%, 0%, 30.6%) |
| CIE-LAB | lab(28.10, 48.65, -69.67) |
| CIE-LCH | lch(28.10, 84.98, 304.93°) |
| OKLab | oklab(40.16% 0.028 -0.2013) |
| OKLCH | oklch(40.16% 0.203 277.9) |
| XYZ | xyz(10.3461, 5.4943, 42.1017) |
| Luminance | 0.0549 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Indigo Blue
#3A18B1
ΔE00 2.60
True Blue
#010FCC
ΔE00 4.81
Violet Blue
#510AC9
ΔE00 5.09
Ultramarine
#2000B1
ΔE00 5.55
Sapphire (survey)
#2138AB
ΔE00 5.55
Mediumblue
#0000CD
ΔE00 5.58
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3927B1 #9FB127
analogous
#275AB1 #3927B1 #7E27B1
triadic
#3927B1 #B13927 #27B139
tetradic
#3927B1 #B1275A #9FB127 #27B17E
square
#3927B1 #B1275A #9FB127 #27B17E
split-complementary
#3927B1 #B17E27 #5AB127
monochromatic
#19114D #291C7F #3927B1 #5440D5 #8172E0
Accessibility & contrast
On white
10.00
#3927B1 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.10
#3927B1 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3927B1
10.00:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3927B1 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3927B1 | 1.00 | 10.00 | 2.10 | 10.00 |
| #FFFFFF | 10.00 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.10 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 10.00 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0048B5
Deuteranopia (green-blind)
#003DAF
Tritanopia (blue-blind)
#00506B
Achromatopsia (no color)
#424242
Design tokens & code
CSS
--color: #3927b1; /* rgb */ color: rgb(57, 39, 177); /* oklch */ color: oklch(40.2% 0.203 277.9);
Tailwind
colors: {
custom: {
50: '#8165ca',
500: '#3927b1',
950: '#000000',
},
}SCSS
$custom: #3927b1; $custom-light: #8165ca; $custom-dark: #000000;
JSON
{
"hex": "#3927b1",
"rgb": {
"r": 57,
"g": 39,
"b": 177
},
"hsl": {
"h": 247.826,
"s": 63.889,
"l": 42.353
},
"oklch": {
"l": 0.40164,
"c": 0.20322,
"h": 277.9
},
"luminance": 0.05495
}Semantic roles & 50–950 ramp
primary
#3927B1
secondary
#BBC76D
accent
#E741D1
background
#F8F6FC
surface
#F0EBF9
border
#CBC6D2
text
#0C0613
muted
#7D7A82