#3F4A92
Closest named color: Blueberry (#464196). oklch(43.8% 0.118 274), rgb(63, 74, 146).
Aa
White text reads best on this color (8.05:1).
About this color
#3F4A92 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.118 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.026 away. White text reads best on it, at 8.05:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.60:1 |
| White text | 8.05:1 |
Values
| HEX | #3F4A92 |
| RGB | rgb(63, 74, 146) |
| HSL | hsl(232, 40%, 41%) |
| OKLCH | oklch(43.8% 0.118 274) |
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 #3F4A92 | 8.05:1 | AAA | Lc -92.4 | Preferred for body text |
| Black text on #3F4A92 | 2.60:1 | Fails | Lc 16.3 | Dividers and decoration only |
| #3F4A92 text on white | 8.05:1 | AAA | Lc 87.7 | Fine for body text |
| #3F4A92 text on black | 2.60:1 | Fails | Lc -14.4 | 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 800.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F8
oklch(93.5% 0.021 274)
-
Step 200
200
#D1D8F3
oklch(88.5% 0.038 274.1)
-
Step 300
300
#B2BEEE
oklch(80.9% 0.069 273.8)
-
Step 400
400
#8B9BE5
oklch(70.6% 0.11 273.9)
-
Step 500
500
#7081DE
oklch(63.2% 0.141 273.9)
-
Step 600
600
#5968CB
oklch(55.6% 0.153 273.9)
-
Step 700
700
#4956B0
oklch(49.1% 0.143 273.8)
-
Step 800
800 (this color)
#3F4A92
oklch(43.8% 0.118 274)
-
Step 900
900
#333C72
oklch(37.7% 0.092 274)
-
Step 950
950
#1E2443
oklch(27.2% 0.058 273.7)
#3F4A92 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) | #285495 | 0.034 |
| Deuteranopia (no green cones) | #1C4D90 | 0.037 |
| Tritanopia (no blue cones) | #115A67 | 0.104 |
| Achromatopsia (no color) | #505050 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F4A92
#3F4A92
oklch(43.8% 0.118 274)
- #625000
#625000
oklch(43.7% 0.09 93.9)
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 #3F4A92, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.026
- Twilight #4E518B ΔE 0.034
- Dark Slate Blue #483D8B ΔE 0.036
- Dusk Blue #26538D ΔE 0.037
- Cobalt #1E488F ΔE 0.039
- Denim Blue #3B5B92 ΔE 0.048
- Dusk #4E5481 ΔE 0.050
- Light Navy #155084 ΔE 0.051
Use #3F4A92 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.