#3F1B5C
Closest named color: Plum Purple (#4E0550). oklch(31% 0.113 306.3), rgb(63, 27, 92).
Aa
White text reads best on this color (13.79:1).
About this color
#3F1B5C is a dark, moderately saturated purple. In OKLCH its lightness is 31%, its chroma 0.113 and its hue 306°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Plum Purple (#4E0550), ΔE 0.049 away. White text reads best on it, at 13.79:1.
| Hue family | Purples |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.113) |
| Temperature | in between |
| Nearest name | Plum Purple (#4E0550) |
| Black text | 1.52:1 |
| White text | 13.79:1 |
Values
| HEX | #3F1B5C |
| RGB | rgb(63, 27, 92) |
| HSL | hsl(273, 55%, 23%) |
| OKLCH | oklch(31% 0.113 306.3) |
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 #3F1B5C | 13.79:1 | AAA | Lc -103.1 | Preferred for body text |
| Black text on #3F1B5C | 1.52:1 | Fails | Lc 0.0 | Not readable |
| #3F1B5C text on white | 13.79:1 | AAA | Lc 99.9 | Preferred for body text |
| #3F1B5C text on black | 1.52:1 | 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
#F8F3FF
oklch(97.1% 0.017 304.8)
-
Step 100
100
#F0E4FF
oklch(93.6% 0.038 305.7)
-
Step 200
200
#E5CEFF
oklch(88.6% 0.071 306.3)
-
Step 300
300
#D5ACFF
oklch(81% 0.122 306.5)
-
Step 400
400
#C07AFF
oklch(70.8% 0.196 306.4)
-
Step 500
500
#B14AFF
oklch(63% 0.255 306.3)
-
Step 600
600
#9F00F2
oklch(55.6% 0.287 306.4)
-
Step 700
700
#8600CD
oklch(49.1% 0.253 306.4)
-
Step 800
800
#6E00AA
oklch(42.6% 0.22 306.2)
-
Step 900
900
#5A1289
oklch(37.7% 0.178 306.4)
-
Step 950
950 (this color)
#3F1B5C
oklch(31% 0.113 306.3)
#3F1B5C 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) | #002C5E | 0.093 |
| Deuteranopia (no green cones) | #0B2D5B | 0.087 |
| Tritanopia (no blue cones) | #3A2939 | 0.080 |
| Achromatopsia (no color) | #2D2D2D | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F1B5C
#3F1B5C
oklch(31% 0.113 306.3)
- #263700
#263700
oklch(31% 0.079 126.3)
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 #3F1B5C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Plum Purple #4E0550 ΔE 0.049
- Royal Purple #4B006E ΔE 0.050
- Deep Violet #490648 ΔE 0.052
- Eggplant Purple #430541 ΔE 0.060
- Grape Purple #5D1451 ΔE 0.069
- Dark Purple #35063E ΔE 0.071
- Indigo #4B0082 ΔE 0.073
- Deep Purple #36013F ΔE 0.074
Use #3F1B5C 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.