#040B22
Closest named color: Rich Navy (#001219). oklch(15.8% 0.05 265.5), rgb(4, 11, 34).
Aa
White text reads best on this color (19.51:1).
About this color
#040B22 is a very dark, muted blue. In OKLCH its lightness is 16%, its chroma 0.050 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.036 away. White text reads best on it, at 19.51:1.
| Hue family | Blues |
| Lightness | very dark (16%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.07:1 |
| White text | 19.51:1 |
Values
| HEX | #040B22 |
| RGB | rgb(4, 11, 34) |
| HSL | hsl(226, 79%, 7%) |
| OKLCH | oklch(15.8% 0.05 265.5) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #040B22 | 19.51:1 | AAA | Lc -107.6 | Preferred for body text |
| Black text on #040B22 | 1.07:1 | Fails | Lc 0.0 | Not readable |
| #040B22 text on white | 19.51:1 | AAA | Lc 105.6 | Preferred for body text |
| #040B22 text on black | 1.07:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CFD9F0
oklch(88.5% 0.033 266.9)
-
Step 300
300
#AEC1E8
oklch(81% 0.059 264.6)
-
Step 400
400
#849FDC
oklch(70.6% 0.095 265.7)
-
Step 500
500
#6687D3
oklch(63.2% 0.121 265.3)
-
Step 600
600
#4E6FC0
oklch(55.6% 0.132 265.6)
-
Step 700
700
#3F5CA6
oklch(49% 0.123 265.9)
-
Step 800
800
#344C86
oklch(42.7% 0.101 265.4)
-
Step 900
900
#2D406B
oklch(37.7% 0.078 264.9)
-
Step 950
950 (this color)
#040B22
oklch(15.8% 0.05 265.5)
#040B22 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #010E23 | 0.011 |
| Deuteranopia (no green cones) | #000B22 | 0.010 |
| Tritanopia (no blue cones) | #001014 | 0.040 |
| Achromatopsia (no color) | #0C0C0C | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #040B22
#040B22
oklch(15.8% 0.05 265.5)
- #130C00
#130C00
oklch(15.9% 0.033 87.5)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #040B22, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.036
- Midnight #03012D ΔE 0.042
- Dark Navy Blue #00022E ΔE 0.043
- Dark Navy #000435 ΔE 0.046
- Almost Black #070D0D ΔE 0.048
- Very Dark Blue #000133 ΔE 0.049
- Rich Black #0D1B2A ΔE 0.062
- Navy Blue #001146 ΔE 0.074
Use #040B22 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.