#3B40BA#3B40BA
#3B40BA is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.9% C 0.188 H 274.1°. Best body text is #FFFFFF at 7.99:1 contrast (WCAG AA passes).
Color values
| HEX | #3B40BA |
|---|---|
| RGB | rgb(59, 64, 186) |
| HSL | hsl(238, 52%, 48%) |
| HSV | hsv(238, 68%, 73%) |
| CMYK | cmyk(68.3%, 65.6%, 0%, 27.1%) |
| CIE-LAB | lab(34.27, 37.55, -64.85) |
| CIE-LCH | lch(34.27, 74.94, 300.07°) |
| OKLab | oklab(44.88% 0.0134 -0.1872) |
| OKLCH | oklch(44.88% 0.188 274.1) |
| XYZ | xyz(12.4970, 8.1406, 47.3576) |
| Luminance | 0.0814 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Blue Blue
#2242C7
ΔE00 2.67
Ocean Blue
#4F42B5
ΔE00 2.84
Sapphire (survey)
#2138AB
ΔE00 3.90
Blue With A Hint Of Purple
#533CC6
ΔE00 4.05
Blurple
#5539CC
ΔE00 4.90
Blue (survey)
#0343DF
ΔE00 5.00
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3B40BA #BAB53B
analogous
#3B7FBA #3B40BA #753BBA
triadic
#3B40BA #BA3B40 #40BA3B
tetradic
#3B40BA #BA3B7F #BAB53B #3BBA75
square
#3B40BA #BA3B7F #BAB53B #3BBA75
split-complementary
#3B40BA #BA753B #7FBA3B
monochromatic
#1E205D #2C308C #3B40BA #6468CE #9396DD
Accessibility & contrast
On white
7.99
#3B40BA on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.63
#3B40BA on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3B40BA
7.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3B40BA | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3B40BA | 1.00 | 7.99 | 2.63 | 7.99 |
| #FFFFFF | 7.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.63 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0056BE
Deuteranopia (green-blind)
#004BB8
Tritanopia (blue-blind)
#006077
Achromatopsia (no color)
#515151
Design tokens & code
CSS
--color: #3b40ba; /* rgb */ color: rgb(59, 64, 186); /* oklch */ color: oklch(44.9% 0.188 274.1);
Tailwind
colors: {
custom: {
50: '#8175d0',
500: '#3b40ba',
950: '#000000',
},
}SCSS
$custom: #3b40ba; $custom-light: #8175d0; $custom-dark: #000000;
JSON
{
"hex": "#3b40ba",
"rgb": {
"r": 59,
"g": 64,
"b": 186
},
"hsl": {
"h": 237.638,
"s": 51.837,
"l": 48.039
},
"oklch": {
"l": 0.44877,
"c": 0.18772,
"h": 274.1
},
"luminance": 0.08142
}Semantic roles & 50–950 ramp
primary
#3B40BA
secondary
#C8C589
accent
#D64DDB
background
#F8F7FC
surface
#F0EDF9
border
#CBC8D2
text
#0C0814
muted
#7D7B82