#040E27
Closest named color: Rich Navy (#001219). oklch(17.2% 0.054 263.1), rgb(4, 14, 39).
Aa
White text reads best on this color (19.13:1).
About this color
#040E27 is a very dark, muted blue. In OKLCH its lightness is 17%, its chroma 0.054 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.037 away. White text reads best on it, at 19.13:1.
| Hue family | Blues |
| Lightness | very dark (17%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.09:1 |
| White text | 19.13:1 |
Values
| HEX | #040E27 |
| RGB | rgb(4, 14, 39) |
| HSL | hsl(223, 81%, 8%) |
| OKLCH | oklch(17.2% 0.054 263.1) |
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 #040E27 | 19.13:1 | AAA | Lc -107.4 | Preferred for body text |
| Black text on #040E27 | 1.09:1 | Fails | Lc 0.0 | Not readable |
| #040E27 text on white | 19.13:1 | AAA | Lc 105.4 | Preferred for body text |
| #040E27 text on black | 1.09:1 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CDDAF1
oklch(88.6% 0.035 262)
-
Step 300
300
#ABC1EB
oklch(80.9% 0.064 263.3)
-
Step 400
400
#7FA0E1
oklch(70.7% 0.103 263.3)
-
Step 500
500
#5F87D9
oklch(63.1% 0.132 263.4)
-
Step 600
600
#456FC6
oklch(55.5% 0.143 263.1)
-
Step 700
700
#375DAB
oklch(49.2% 0.132 262.9)
-
Step 800
800
#2E4C8B
oklch(42.7% 0.111 263.3)
-
Step 900
900
#29406F
oklch(37.8% 0.086 263.2)
-
Step 950
950 (this color)
#040E27
oklch(17.2% 0.054 263.1)
#040E27 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) | #021128 | 0.010 |
| Deuteranopia (no green cones) | #000E26 | 0.009 |
| Tritanopia (no blue cones) | #001418 | 0.043 |
| Achromatopsia (no color) | #0F0F0F | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #040E27
#040E27
oklch(17.2% 0.054 263.1)
- #170E00
#170E00
oklch(17.1% 0.035 83.4)
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 #040E27, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.037
- Dark Navy #000435 ΔE 0.043
- Dark Navy Blue #00022E ΔE 0.046
- Midnight #03012D ΔE 0.046
- Very Dark Blue #000133 ΔE 0.050
- Rich Black #0D1B2A ΔE 0.051
- Almost Black #070D0D ΔE 0.055
- Navy Blue #001146 ΔE 0.062
Use #040E27 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.