#040519
Closest named color: Midnight (#03012D). oklch(13% 0.045 274.9), rgb(4, 5, 25).
Aa
White text reads best on this color (20.17:1).
About this color
#040519 is a very dark, muted blue. In OKLCH its lightness is 13%, its chroma 0.045 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight (#03012D), ΔE 0.045 away. White text reads best on it, at 20.17:1.
| Hue family | Blues |
| Lightness | very dark (13%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Midnight (#03012D) |
| Black text | 1.04:1 |
| White text | 20.17:1 |
Values
| HEX | #040519 |
| RGB | rgb(4, 5, 25) |
| HSL | hsl(237, 72%, 6%) |
| OKLCH | oklch(13% 0.045 274.9) |
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 #040519 | 20.17:1 | AAA | Lc -107.8 | Preferred for body text |
| Black text on #040519 | 1.04:1 | Fails | Lc 0.0 | Not readable |
| #040519 text on white | 20.17:1 | AAA | Lc 105.9 | Preferred for body text |
| #040519 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6E9F5
oklch(93.5% 0.016 274.8)
-
Step 200
200
#D3D8ED
oklch(88.5% 0.029 275.1)
-
Step 300
300
#B6BFE4
oklch(81% 0.053 274.4)
-
Step 400
400
#919DD6
oklch(70.8% 0.085 274.9)
-
Step 500
500
#7683CC
oklch(63% 0.111 275.1)
-
Step 600
600
#5F6CB8
oklch(55.6% 0.119 274.6)
-
Step 700
700
#4F5A9F
oklch(49.2% 0.111 274.8)
-
Step 800
800
#414A81
oklch(42.8% 0.092 274.9)
-
Step 900
900
#373E67
oklch(37.8% 0.071 275.1)
-
Step 950
950 (this color)
#040519
oklch(13% 0.045 274.9)
#040519 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) | #00081A | 0.017 |
| Deuteranopia (no green cones) | #000619 | 0.014 |
| Tritanopia (no blue cones) | #00090D | 0.038 |
| Achromatopsia (no color) | #070707 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #040519
#040519
oklch(13% 0.045 274.9)
- #0A0700
#0A0700
oklch(12.9% 0.027 96.5)
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 #040519, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight #03012D ΔE 0.045
- Dark Navy Blue #00022E ΔE 0.048
- Almost Black #070D0D ΔE 0.050
- Rich Navy #001219 ΔE 0.053
- Very Dark Blue #000133 ΔE 0.058
- Dark Navy #000435 ΔE 0.060
- Very Dark Brown #1D0200 ΔE 0.088
- Rich Black #0D1B2A ΔE 0.090
Use #040519 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.