#040A1E
Closest named color: Rich Navy (#001219). oklch(15.2% 0.044 265.7), rgb(4, 10, 30).
Aa
White text reads best on this color (19.67:1).
About this color
#040A1E is a very dark, muted blue. In OKLCH its lightness is 15%, its chroma 0.044 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.035 away. White text reads best on it, at 19.67:1.
| Hue family | Blues |
| Lightness | very dark (15%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.06:1 |
| White text | 19.67:1 |
Values
| HEX | #040A1E |
| RGB | rgb(4, 10, 30) |
| HSL | hsl(226, 76%, 7%) |
| OKLCH | oklch(15.2% 0.044 265.7) |
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 #040A1E | 19.67:1 | AAA | Lc -107.6 | Preferred for body text |
| Black text on #040A1E | 1.06:1 | Fails | Lc 0.0 | Not readable |
| #040A1E text on white | 19.67:1 | AAA | Lc 105.7 | Preferred for body text |
| #040A1E text on black | 1.06:1 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D0D9ED
oklch(88.5% 0.029 266.4)
-
Step 300
300
#B1C1E3
oklch(81% 0.051 265.3)
-
Step 400
400
#88A0D6
oklch(70.8% 0.084 265.8)
-
Step 500
500
#6A87CB
oklch(63% 0.108 265.8)
-
Step 600
600
#5270B7
oklch(55.5% 0.116 265.5)
-
Step 700
700
#435E9E
oklch(49.2% 0.108 265.4)
-
Step 800
800
#374D80
oklch(42.8% 0.089 265.2)
-
Step 900
900
#304067
oklch(37.7% 0.07 266.2)
-
Step 950
950 (this color)
#040A1E
oklch(15.2% 0.044 265.7)
#040A1E 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) | #020C1F | 0.008 |
| Deuteranopia (no green cones) | #000A1E | 0.011 |
| Tritanopia (no blue cones) | #000F12 | 0.037 |
| Achromatopsia (no color) | #0B0B0B | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #040A1E
#040A1E
oklch(15.2% 0.044 265.7)
- #110A00
#110A00
oklch(15% 0.031 85.7)
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 #040A1E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.035
- Almost Black #070D0D ΔE 0.042
- Midnight #03012D ΔE 0.045
- Dark Navy Blue #00022E ΔE 0.046
- Dark Navy #000435 ΔE 0.052
- Very Dark Blue #000133 ΔE 0.054
- Rich Black #0D1B2A ΔE 0.067
- Navy Blue #001146 ΔE 0.082
Use #040A1E 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.