#3F40AD#3F40AD
#3F40AD is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.0% C 0.170 H 276.5°. Best body text is #FFFFFF at 8.24:1 contrast (WCAG AA passes).
Color values
| HEX | #3F40AD |
|---|---|
| RGB | rgb(63, 64, 173) |
| HSL | hsl(239, 47%, 46%) |
| HSV | hsv(239, 64%, 68%) |
| CMYK | cmyk(63.6%, 63%, 0%, 32.2%) |
| CIE-LAB | lab(33.44, 33.67, -58.51) |
| CIE-LCH | lch(33.44, 67.50, 299.92°) |
| OKLab | oklab(43.99% 0.0191 -0.1685) |
| OKLCH | oklch(43.99% 0.17 276.5) |
| XYZ | xyz(11.4237, 7.7398, 40.4190) |
| Luminance | 0.0774 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Ocean Blue
#4F42B5
ΔE00 2.71
Sapphire (survey)
#2138AB
ΔE00 3.61
Blueberry
#464196
ΔE00 3.89
Blue Blue
#2242C7
ΔE00 4.20
Blue With A Hint Of Purple
#533CC6
ΔE00 4.93
Blurple
#5539CC
ΔE00 5.89
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3F40AD #ADAC3F
analogous
#3F77AD #3F40AD #753FAD
triadic
#3F40AD #AD3F40 #40AD3F
tetradic
#3F40AD #AD3F77 #ADAC3F #3FAD75
square
#3F40AD #AD3F77 #ADAC3F #3FAD75
split-complementary
#3F40AD #AD753F #77AD3F
monochromatic
#1E1F53 #2F2F80 #3F40AD #6364C6 #9091D7
Accessibility & contrast
On white
8.24
#3F40AD on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.55
#3F40AD on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3F40AD
8.24:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3F40AD | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3F40AD | 1.00 | 8.24 | 2.55 | 8.24 |
| #FFFFFF | 8.24 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.55 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.24 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0053B1
Deuteranopia (green-blind)
#004AAB
Tritanopia (blue-blind)
#005B70
Achromatopsia (no color)
#4F4F4F
Design tokens & code
CSS
--color: #3f40ad; /* rgb */ color: rgb(63, 64, 173); /* oklch */ color: oklch(44.0% 0.170 276.5);
Tailwind
colors: {
custom: {
50: '#8175c6',
500: '#3f40ad',
950: '#000000',
},
}SCSS
$custom: #3f40ad; $custom-light: #8175c6; $custom-dark: #000000;
JSON
{
"hex": "#3f40ad",
"rgb": {
"r": 63,
"g": 64,
"b": 173
},
"hsl": {
"h": 239.455,
"s": 46.61,
"l": 46.275
},
"oklch": {
"l": 0.43991,
"c": 0.16959,
"h": 276.5
},
"luminance": 0.07741
}Semantic roles & 50–950 ramp
primary
#3F40AD
secondary
#C2C186
accent
#D552D6
background
#F8F7FC
surface
#F0EDF8
border
#CBC8D1
text
#0B0813
muted
#7C7B82