#040727
Closest named color: Midnight (#03012D). oklch(15.3% 0.066 270.4), rgb(4, 7, 39).
Aa
White text reads best on this color (19.72:1).
About this color
#040727 is a very dark, muted blue. In OKLCH its lightness is 15%, its chroma 0.066 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight (#03012D), ΔE 0.025 away. White text reads best on it, at 19.72:1.
| Hue family | Blues |
| Lightness | very dark (15%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Midnight (#03012D) |
| Black text | 1.06:1 |
| White text | 19.72:1 |
Values
| HEX | #040727 |
| RGB | rgb(4, 7, 39) |
| HSL | hsl(235, 81%, 8%) |
| OKLCH | oklch(15.3% 0.066 270.4) |
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 #040727 | 19.72:1 | AAA | Lc -107.6 | Preferred for body text |
| Black text on #040727 | 1.06:1 | Fails | Lc 0.0 | Not readable |
| #040727 text on white | 19.72:1 | AAA | Lc 105.6 | Preferred for body text |
| #040727 text on black | 1.06:1 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4EAFA
oklch(93.7% 0.023 269.4)
-
Step 200
200
#CED8F7
oklch(88.4% 0.044 271.3)
-
Step 300
300
#ADBFF4
oklch(81% 0.078 270)
-
Step 400
400
#839CEE
oklch(70.8% 0.124 270.1)
-
Step 500
500
#6580E9
oklch(63% 0.16 270.4)
-
Step 600
600
#4E67D7
oklch(55.5% 0.174 270.4)
-
Step 700
700
#4055BB
oklch(49.1% 0.162 270.6)
-
Step 800
800
#344697
oklch(42.6% 0.134 270.3)
-
Step 900
900
#2D3C78
oklch(37.7% 0.104 270.2)
-
Step 950
950 (this color)
#040727
oklch(15.3% 0.066 270.4)
#040727 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) | #000C28 | 0.017 |
| Deuteranopia (no green cones) | #000926 | 0.011 |
| Tritanopia (no blue cones) | #000F15 | 0.052 |
| Achromatopsia (no color) | #0B0B0B | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #040727
#040727
oklch(15.3% 0.066 270.4)
- #110B00
#110B00
oklch(15.3% 0.031 89.9)
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 #040727, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight #03012D ΔE 0.025
- Dark Navy Blue #00022E ΔE 0.027
- Dark Navy #000435 ΔE 0.032
- Very Dark Blue #000133 ΔE 0.034
- Rich Navy #001219 ΔE 0.053
- Almost Black #070D0D ΔE 0.064
- Night Blue #040348 ΔE 0.066
- Navy Blue #001146 ΔE 0.069
Use #040727 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.