#040A28
Closest named color: Midnight (#03012D). oklch(16.2% 0.062 267.8), rgb(4, 10, 40).
Aa
White text reads best on this color (19.45:1).
About this color
#040A28 is a very dark, muted blue. In OKLCH its lightness is 16%, its chroma 0.062 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight (#03012D), ΔE 0.033 away. White text reads best on it, at 19.45:1.
| Hue family | Blues |
| Lightness | very dark (16%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Midnight (#03012D) |
| Black text | 1.07:1 |
| White text | 19.45:1 |
Values
| HEX | #040A28 |
| RGB | rgb(4, 10, 40) |
| HSL | hsl(230, 82%, 9%) |
| OKLCH | oklch(16.2% 0.062 267.8) |
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 #040A28 | 19.45:1 | AAA | Lc -107.5 | Preferred for body text |
| Black text on #040A28 | 1.07:1 | Fails | Lc 0.0 | Not readable |
| #040A28 text on white | 19.45:1 | AAA | Lc 105.5 | Preferred for body text |
| #040A28 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E4EAF9
oklch(93.7% 0.021 268.4)
-
Step 200
200
#CDD9F5
oklch(88.5% 0.041 267.1)
-
Step 300
300
#ACC0F1
oklch(81% 0.073 267.4)
-
Step 400
400
#809DEB
oklch(70.6% 0.119 267.8)
-
Step 500
500
#6283E4
oklch(63.1% 0.151 267.8)
-
Step 600
600
#4A6AD2
oklch(55.5% 0.164 267.9)
-
Step 700
700
#3B58B6
oklch(49.1% 0.153 267.6)
-
Step 800
800
#314893
oklch(42.6% 0.126 267.9)
-
Step 900
900
#2B3D75
oklch(37.6% 0.098 268)
-
Step 950
950 (this color)
#040A28
oklch(16.2% 0.062 267.8)
#040A28 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) | #000F29 | 0.017 |
| Deuteranopia (no green cones) | #000B27 | 0.010 |
| Tritanopia (no blue cones) | #001217 | 0.050 |
| Achromatopsia (no color) | #0D0D0D | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #040A28
#040A28
oklch(16.2% 0.062 267.8)
- #140D00
#140D00
oklch(16.4% 0.033 88.3)
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 #040A28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight #03012D ΔE 0.033
- Dark Navy #000435 ΔE 0.034
- Dark Navy Blue #00022E ΔE 0.034
- Very Dark Blue #000133 ΔE 0.039
- Rich Navy #001219 ΔE 0.047
- Almost Black #070D0D ΔE 0.061
- Navy Blue #001146 ΔE 0.063
- Rich Black #0D1B2A ΔE 0.063
Use #040A28 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.