#040C1C
Closest named color: Rich Navy (#001219). oklch(15.6% 0.037 260), rgb(4, 12, 28).
Aa
White text reads best on this color (19.54:1).
About this color
#040C1C is a very dark, muted blue. In OKLCH its lightness is 16%, its chroma 0.037 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.026 away. White text reads best on it, at 19.54:1.
| Hue family | Blues |
| Lightness | very dark (16%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.07:1 |
| White text | 19.54:1 |
Values
| HEX | #040C1C |
| RGB | rgb(4, 12, 28) |
| HSL | hsl(220, 75%, 6%) |
| OKLCH | oklch(15.6% 0.037 260) |
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 #040C1C | 19.54:1 | AAA | Lc -107.6 | Preferred for body text |
| Black text on #040C1C | 1.07:1 | Fails | Lc 0.0 | Not readable |
| #040C1C text on white | 19.54:1 | AAA | Lc 105.7 | Preferred for body text |
| #040C1C 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D0DAEA
oklch(88.6% 0.025 259.8)
-
Step 300
300
#B0C2DE
oklch(80.9% 0.044 259.2)
-
Step 400
400
#87A2CD
oklch(70.8% 0.07 259.6)
-
Step 500
500
#698AC0
oklch(63.1% 0.09 260)
-
Step 600
600
#5173AD
oklch(55.6% 0.099 260.6)
-
Step 700
700
#416194
oklch(49.2% 0.091 259.4)
-
Step 800
800
#364F78
oklch(42.7% 0.075 259.9)
-
Step 900
900
#2F4261
oklch(37.8% 0.059 259.9)
-
Step 950
950 (this color)
#040C1C
oklch(15.6% 0.037 260)
#040C1C 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) | #060D1D | 0.006 |
| Deuteranopia (no green cones) | #030B1C | 0.005 |
| Tritanopia (no blue cones) | #001012 | 0.032 |
| Achromatopsia (no color) | #0C0C0C | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #040C1C
#040C1C
oklch(15.6% 0.037 260)
- #130A00
#130A00
oklch(15.4% 0.032 79.3)
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 #040C1C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.026
- Almost Black #070D0D ΔE 0.034
- Midnight #03012D ΔE 0.054
- Dark Navy Blue #00022E ΔE 0.054
- Dark Navy #000435 ΔE 0.059
- Very Dark Blue #000133 ΔE 0.062
- Rich Black #0D1B2A ΔE 0.062
- Very Dark Brown #1D0200 ΔE 0.084
Use #040C1C 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.