#4140AB#4140AB
#4140AB is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.0% C 0.166 H 277.5°. Best body text is #FFFFFF at 8.25:1 contrast (WCAG AA passes).
Color values
| HEX | #4140AB |
|---|---|
| RGB | rgb(65, 64, 171) |
| HSL | hsl(241, 46%, 46%) |
| HSV | hsv(241, 63%, 67%) |
| CMYK | cmyk(62%, 62.6%, 0%, 32.9%) |
| CIE-LAB | lab(33.41, 33.31, -57.34) |
| CIE-LCH | lch(33.41, 66.31, 300.16°) |
| OKLab | oklab(43.96% 0.0217 -0.165) |
| OKLCH | oklch(43.96% 0.166 277.5) |
| XYZ | xyz(11.3617, 7.7300, 39.4135) |
| Luminance | 0.0773 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Ocean Blue
#4F42B5
ΔE00 2.62
Blueberry
#464196
ΔE00 3.54
Sapphire (survey)
#2138AB
ΔE00 3.83
Blue Blue
#2242C7
ΔE00 4.60
Blue With A Hint Of Purple
#533CC6
ΔE00 4.98
Darkslateblue
#483D8B
ΔE00 5.56
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#4140AB #AAAB40
analogous
#4074AB #4140AB #7640AB
triadic
#4140AB #AB4140 #40AB41
tetradic
#4140AB #AB4074 #AAAB40 #40AB76
square
#4140AB #AB4074 #AAAB40 #40AB76
split-complementary
#4140AB #AB7640 #74AB40
monochromatic
#1F1F52 #302F7E #4140AB #6463C5 #9190D5
Accessibility & contrast
On white
8.25
#4140AB on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.55
#4140AB on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #4140AB
8.25:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##4140AB | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##4140AB | 1.00 | 8.25 | 2.55 | 8.25 |
| #FFFFFF | 8.25 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.55 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.25 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0053AE
Deuteranopia (green-blind)
#004AA9
Tritanopia (blue-blind)
#005B6F
Achromatopsia (no color)
#4F4F4F
Design tokens & code
CSS
--color: #4140ab; /* rgb */ color: rgb(65, 64, 171); /* oklch */ color: oklch(44.0% 0.166 277.5);
Tailwind
colors: {
custom: {
50: '#8175c5',
500: '#4140ab',
950: '#000000',
},
}SCSS
$custom: #4140ab; $custom-light: #8175c5; $custom-dark: #000000;
JSON
{
"hex": "#4140ab",
"rgb": {
"r": 65,
"g": 64,
"b": 171
},
"hsl": {
"h": 240.561,
"s": 45.532,
"l": 46.078
},
"oklch": {
"l": 0.43962,
"c": 0.16645,
"h": 277.5
},
"luminance": 0.07731
}Semantic roles & 50–950 ramp
primary
#4140AB
secondary
#C0C186
accent
#D553D4
background
#F8F7FC
surface
#F0EDF8
border
#CBC8D1
text
#0B0813
muted
#7C7B82