#3F3469
Closest named color: Prussian Blue (#1D3557). oklch(36.4% 0.089 290.8), rgb(63, 52, 105).
Aa
White text reads best on this color (11.01:1).
About this color
#3F3469 is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.089 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.062 away. White text reads best on it, at 11.01:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.089) |
| Temperature | in between |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.90:1 |
| White text | 11.01:1 |
Values
| HEX | #3F3469 |
| RGB | rgb(63, 52, 105) |
| HSL | hsl(252, 34%, 31%) |
| OKLCH | oklch(36.4% 0.089 290.8) |
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 #3F3469 | 11.01:1 | AAA | Lc -99.2 | Preferred for body text |
| Black text on #3F3469 | 1.90:1 | Fails | Lc 8.6 | Not readable |
| #3F3469 text on white | 11.01:1 | AAA | Lc 95.3 | Preferred for body text |
| #3F3469 text on black | 1.90:1 | Fails | Lc -7.3 | 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 900.
-
Step 50
50
#F5F4FB
oklch(97% 0.009 292.8)
-
Step 100
100
#E9E8F6
oklch(93.6% 0.019 289.3)
-
Step 200
200
#D8D5F1
oklch(88.4% 0.038 290.5)
-
Step 300
300
#C0BAE9
oklch(81% 0.066 290.7)
-
Step 400
400
#A195DE
oklch(70.8% 0.106 291)
-
Step 500
500
#8A79D5
oklch(63.1% 0.136 290.5)
-
Step 600
600
#7560C2
oklch(55.6% 0.147 290.7)
-
Step 700
700
#634EA8
oklch(49.1% 0.139 291.2)
-
Step 800
800
#504188
oklch(42.7% 0.114 290.5)
-
Step 900
900 (this color)
#3F3469
oklch(36.4% 0.089 290.8)
-
Step 950
950
#272140
oklch(27.1% 0.057 291)
#3F3469 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) | #203D6B | 0.048 |
| Deuteranopia (no green cones) | #223B68 | 0.045 |
| Tritanopia (no blue cones) | #343E49 | 0.073 |
| Achromatopsia (no color) | #3C3C3C | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F3469
#3F3469
oklch(36.4% 0.089 290.8)
- #404200
#404200
oklch(36.5% 0.081 111.7)
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 #3F3469, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.062
- Dark Slate Blue #483D8B ΔE 0.062
- Marine Blue #01386A ΔE 0.069
- Twilight Blue #0A437A ΔE 0.069
- Dark Grey Blue #29465B ΔE 0.070
- Dark Blue Grey #1F3B4D ΔE 0.075
- Space Cadet #2B2D42 ΔE 0.079
- Marine #042E60 ΔE 0.081
Use #3F3469 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.