#040B34#040B34
#040B34 is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 17.8% C 0.081 H 267.5°. Best body text is #FFFFFF at 19.05:1 contrast (WCAG AA passes).
Color values
| HEX | #040B34 |
|---|---|
| RGB | rgb(4, 11, 52) |
| HSL | hsl(231, 86%, 11%) |
| HSV | hsv(231, 92%, 20%) |
| CMYK | cmyk(92.3%, 78.8%, 0%, 79.6%) |
| CIE-LAB | lab(4.63, 12.36, -26.82) |
| CIE-LCH | lch(4.63, 29.53, 294.75°) |
| OKLab | oklab(17.84% -0.0036 -0.0808) |
| OKLCH | oklch(17.84% 0.081 267.5) |
| XYZ | xyz(0.7894, 0.5130, 3.3056) |
| Luminance | 0.0051 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Dark Navy Blue
#00022E
ΔE00 1.49
Midnight
#03012D
ΔE00 1.69
Dark Navy
#000435
ΔE00 1.72
Very Dark Blue
#000133
ΔE00 1.94
Midnight Blue (survey)
#020035
ΔE00 2.65
Navy (survey)
#01153E
ΔE00 2.78
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#040B34 #342D04
analogous
#042334 #040B34 #150434
triadic
#040B34 #34040B #0B3404
tetradic
#040B34 #340423 #342D04 #043415
square
#040B34 #340423 #342D04 #043415
split-complementary
#040B34 #341504 #233404
monochromatic
#02061C #02061C #040B34 #08176D #0D23A6
Accessibility & contrast
On white
19.05
#040B34 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.10
#040B34 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #040B34
19.05:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##040B34 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##040B34 | 1.00 | 19.05 | 1.10 | 19.05 |
| #FFFFFF | 19.05 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.10 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 19.05 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#001235
Deuteranopia (green-blind)
#000E33
Tritanopia (blue-blind)
#00161E
Achromatopsia (no color)
#101010
Design tokens & code
CSS
--color: #040b34; /* rgb */ color: rgb(4, 11, 52); /* oklch */ color: oklch(17.8% 0.081 267.5);
Tailwind
colors: {
custom: {
50: '#4c4b6c',
500: '#040b34',
950: '#000000',
},
}SCSS
$custom: #040b34; $custom-light: #4c4b6c; $custom-dark: #000000;
JSON
{
"hex": "#040b34",
"rgb": {
"r": 4,
"g": 11,
"b": 52
},
"hsl": {
"h": 231.25,
"s": 85.714,
"l": 10.98
},
"oklch": {
"l": 0.1784,
"c": 0.08088,
"h": 267.5
},
"luminance": 0.00513
}Semantic roles & 50–950 ramp
primary
#040B34
secondary
#76691E
accent
#DE2CFC
background
#F4F4F6
surface
#E7E7EB
border
#C3C3C6
text
#010107
muted
#77777A