#3F2C69
Closest named color: Prussian Blue (#1D3557). oklch(34.9% 0.103 294.9), rgb(63, 44, 105).
Aa
White text reads best on this color (11.82:1).
About this color
#3F2C69 is a dark, moderately saturated purple. In OKLCH its lightness is 35%, its chroma 0.103 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.067 away. White text reads best on it, at 11.82:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.103) |
| Temperature | in between |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.77:1 |
| White text | 11.82:1 |
Values
| HEX | #3F2C69 |
| RGB | rgb(63, 44, 105) |
| HSL | hsl(259, 41%, 29%) |
| OKLCH | oklch(34.9% 0.103 294.9) |
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 #3F2C69 | 11.82:1 | AAA | Lc -100.5 | Preferred for body text |
| Black text on #3F2C69 | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #3F2C69 text on white | 11.82:1 | AAA | Lc 96.9 | Preferred for body text |
| #3F2C69 text on black | 1.77:1 | 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 900.
-
Step 50
50
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EAE7F8
oklch(93.5% 0.023 294.1)
-
Step 200
200
#DAD4F3
oklch(88.4% 0.043 294.4)
-
Step 300
300
#C4B7EE
oklch(80.9% 0.078 295.4)
-
Step 400
400
#A690E5
oklch(70.6% 0.123 294.9)
-
Step 500
500
#9172DD
oklch(63% 0.157 294.8)
-
Step 600
600
#7D58CB
oklch(55.6% 0.171 295.1)
-
Step 700
700
#6947B0
oklch(49% 0.16 294.7)
-
Step 800
800
#563B8E
oklch(42.7% 0.132 295.2)
-
Step 900
900 (this color)
#3F2C69
oklch(34.9% 0.103 294.9)
-
Step 950
950
#291F42
oklch(27% 0.064 294.9)
#3F2C69 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) | #10386B | 0.067 |
| Deuteranopia (no green cones) | #153768 | 0.063 |
| Tritanopia (no blue cones) | #353946 | 0.082 |
| Achromatopsia (no color) | #373737 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F2C69
#3F2C69
oklch(34.9% 0.103 294.9)
- #393E00
#393E00
oklch(34.7% 0.079 114.8)
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 #3F2C69, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.067
- Dark Slate Blue #483D8B ΔE 0.072
- Royal Purple #4B006E ΔE 0.074
- Marine Blue #01386A ΔE 0.075
- Indigo #4B0082 ΔE 0.079
- Marine #042E60 ΔE 0.079
- Space Cadet #2B2D42 ΔE 0.080
- Twilight Blue #0A437A ΔE 0.083
Use #3F2C69 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.