#040E1B
Closest named color: Rich Navy (#001219). oklch(16.1% 0.032 252.7), rgb(4, 14, 27).
Aa
White text reads best on this color (19.37:1).
About this color
#040E1B is a very dark, muted blue. In OKLCH its lightness is 16%, its chroma 0.032 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.018 away. White text reads best on it, at 19.37:1.
| Hue family | Blues |
| Lightness | very dark (16%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.08:1 |
| White text | 19.37:1 |
Values
| HEX | #040E1B |
| RGB | rgb(4, 14, 27) |
| HSL | hsl(214, 74%, 6%) |
| OKLCH | oklch(16.1% 0.032 252.7) |
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 #040E1B | 19.37:1 | AAA | Lc -107.5 | Preferred for body text |
| Black text on #040E1B | 1.08:1 | Fails | Lc 0.0 | Not readable |
| #040E1B text on white | 19.37:1 | AAA | Lc 105.6 | Preferred for body text |
| #040E1B text on black | 1.08:1 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF1
oklch(93.5% 0.011 256.7)
-
Step 200
200
#CFDAE7
oklch(88.4% 0.022 252.5)
-
Step 300
300
#B0C3D9
oklch(81% 0.037 252.1)
-
Step 400
400
#86A3C7
oklch(70.7% 0.062 254.1)
-
Step 500
500
#678CB8
oklch(63% 0.079 253.3)
-
Step 600
600
#4E76A4
oklch(55.6% 0.085 252.7)
-
Step 700
700
#3F638D
oklch(49.1% 0.08 253.1)
-
Step 800
800
#345172
oklch(42.7% 0.065 252.5)
-
Step 900
900
#2D435C
oklch(37.6% 0.051 252.3)
-
Step 950
950 (this color)
#040E1B
oklch(16.1% 0.032 252.7)
#040E1B 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) | #080F1C | 0.010 |
| Deuteranopia (no green cones) | #060C1B | 0.008 |
| Tritanopia (no blue cones) | #001113 | 0.025 |
| Achromatopsia (no color) | #0D0D0D | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #040E1B
#040E1B
oklch(16.1% 0.032 252.7)
- #160B01
#160B01
oklch(16.2% 0.031 71)
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 #040E1B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.018
- Almost Black #070D0D ΔE 0.030
- Rich Black #0D1B2A ΔE 0.057
- Midnight #03012D ΔE 0.061
- Dark Navy Blue #00022E ΔE 0.061
- Dark Navy #000435 ΔE 0.064
- Very Dark Blue #000133 ΔE 0.068
- Very Dark Brown #1D0200 ΔE 0.082
Use #040E1B 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.