#3F3A97
Closest named color: Blueberry (#464196). oklch(41.1% 0.147 280.1), rgb(63, 58, 151).
Aa
White text reads best on this color (9.27:1).
About this color
#3F3A97 is a dark, vivid purple. In OKLCH its lightness is 41%, its chroma 0.147 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.022 away. White text reads best on it, at 9.27:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | vivid (0.147) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.26:1 |
| White text | 9.27:1 |
Values
| HEX | #3F3A97 |
| RGB | rgb(63, 58, 151) |
| HSL | hsl(243, 44%, 41%) |
| OKLCH | oklch(41.1% 0.147 280.1) |
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 #3F3A97 | 9.27:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #3F3A97 | 2.26:1 | Fails | Lc 13.0 | Not readable |
| #3F3A97 text on white | 9.27:1 | AAA | Lc 91.0 | Preferred for body text |
| #3F3A97 text on black | 2.26:1 | Fails | Lc -11.3 | 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 800.
-
Step 50
50
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E6E8FB
oklch(93.5% 0.026 281.1)
-
Step 200
200
#D2D6F9
oklch(88.4% 0.048 280.2)
-
Step 300
300
#B5BBF8
oklch(80.9% 0.086 279.9)
-
Step 400
400
#9195F4
oklch(70.7% 0.138 280.4)
-
Step 500
500
#7878F0
oklch(63.1% 0.176 280.1)
-
Step 600
600
#635DDF
oklch(55.6% 0.192 280.2)
-
Step 700
700
#524CC1
oklch(49.1% 0.177 279.9)
-
Step 800
800 (this color)
#3F3A97
oklch(41.1% 0.147 280.1)
-
Step 900
900
#38377C
oklch(37.8% 0.114 280.1)
-
Step 950
950
#202149
oklch(27.1% 0.073 279.3)
#3F3A97 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) | #004B9A | 0.062 |
| Deuteranopia (no green cones) | #004495 | 0.058 |
| Tritanopia (no blue cones) | #0C5063 | 0.125 |
| Achromatopsia (no color) | #474747 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F3A97
#3F3A97
oklch(41.1% 0.147 280.1)
- #554B00
#554B00
oklch(41% 0.085 100.6)
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 #3F3A97, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.022
- Dark Slate Blue #483D8B ΔE 0.027
- Sapphire #2138AB ΔE 0.051
- Cobalt #1E488F ΔE 0.052
- Rebecca Purple #663399 ΔE 0.070
- Indigo Blue #3A18B1 ΔE 0.071
- Dusk Blue #26538D ΔE 0.073
- Twilight #4E518B ΔE 0.073
Use #3F3A97 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.