#040615
Closest named color: Almost Black (#070D0D). oklch(13% 0.035 272.4), rgb(4, 6, 21).
Aa
White text reads best on this color (20.15:1).
About this color
#040615 is a very dark, muted blue. In OKLCH its lightness is 13%, its chroma 0.035 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Almost Black (#070D0D), ΔE 0.041 away. White text reads best on it, at 20.15:1.
| Hue family | Blues |
| Lightness | very dark (13%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.04:1 |
| White text | 20.15:1 |
Values
| HEX | #040615 |
| RGB | rgb(4, 6, 21) |
| HSL | hsl(233, 68%, 5%) |
| OKLCH | oklch(13% 0.035 272.4) |
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 #040615 | 20.15:1 | AAA | Lc -107.8 | Preferred for body text |
| Black text on #040615 | 1.04:1 | Fails | Lc 0.0 | Not readable |
| #040615 text on white | 20.15:1 | AAA | Lc 105.9 | Preferred for body text |
| #040615 text on black | 1.04:1 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7E9F2
oklch(93.5% 0.012 276.1)
-
Step 200
200
#D4D9E9
oklch(88.6% 0.023 272)
-
Step 300
300
#B7C0DC
oklch(81% 0.041 271.4)
-
Step 400
400
#929FCB
oklch(70.8% 0.066 271.8)
-
Step 500
500
#7886BD
oklch(63.1% 0.085 272.8)
-
Step 600
600
#616FA9
oklch(55.5% 0.092 272.8)
-
Step 700
700
#505D91
oklch(49.1% 0.085 272.3)
-
Step 800
800
#424C76
oklch(42.7% 0.071 272.9)
-
Step 900
900
#37405F
oklch(37.8% 0.055 271.2)
-
Step 950
950 (this color)
#040615
oklch(13% 0.035 272.4)
#040615 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) | #020816 | 0.010 |
| Deuteranopia (no green cones) | #010615 | 0.010 |
| Tritanopia (no blue cones) | #00090C | 0.031 |
| Achromatopsia (no color) | #070707 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #040615
#040615
oklch(13% 0.035 272.4)
- #0B0700
#0B0700
oklch(13.1% 0.027 92.5)
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 #040615, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.041
- Rich Navy #001219 ΔE 0.048
- Midnight #03012D ΔE 0.054
- Dark Navy Blue #00022E ΔE 0.057
- Very Dark Blue #000133 ΔE 0.067
- Dark Navy #000435 ΔE 0.068
- Very Dark Brown #1D0200 ΔE 0.081
- Rich Black #0D1B2A ΔE 0.089
Use #040615 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.