#3F2E89
Closest named color: Dark Slate Blue (#483D8B). oklch(37.8% 0.144 285.8), rgb(63, 46, 137).
Aa
White text reads best on this color (10.69:1).
About this color
#3F2E89 is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.144 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.041 away. White text reads best on it, at 10.69:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.96:1 |
| White text | 10.69:1 |
Values
| HEX | #3F2E89 |
| RGB | rgb(63, 46, 137) |
| HSL | hsl(251, 50%, 36%) |
| OKLCH | oklch(37.8% 0.144 285.8) |
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 #3F2E89 | 10.69:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #3F2E89 | 1.96:1 | Fails | Lc 9.6 | Not readable |
| #3F2E89 text on white | 10.69:1 | AAA | Lc 94.3 | Preferred for body text |
| #3F2E89 text on black | 1.96:1 | Fails | Lc -8.2 | 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
#F4F4FF
oklch(97% 0.015 286.1)
-
Step 100
100
#E7E7FF
oklch(93.5% 0.032 285.8)
-
Step 200
200
#D5D4FF
oklch(88.5% 0.059 286.2)
-
Step 300
300
#BAB7FF
oklch(80.8% 0.101 285.8)
-
Step 400
400
#998FFF
oklch(70.7% 0.16 285.6)
-
Step 500
500
#836DFF
oklch(63.1% 0.208 285.7)
-
Step 600
600
#704AF6
oklch(55.7% 0.241 285.7)
-
Step 700
700
#5E39D6
oklch(49.1% 0.223 285.6)
-
Step 800
800
#4D31AD
oklch(42.8% 0.185 285.9)
-
Step 900
900 (this color)
#3F2E89
oklch(37.8% 0.144 285.8)
-
Step 950
950
#241C50
oklch(27% 0.091 285.5)
#3F2E89 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) | #00408C | 0.070 |
| Deuteranopia (no green cones) | #003B87 | 0.068 |
| Tritanopia (no blue cones) | #214457 | 0.119 |
| Achromatopsia (no color) | #3E3E3E | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F2E89
#3F2E89
oklch(37.8% 0.144 285.8)
- #484400
#484400
oklch(37.8% 0.081 105.9)
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 #3F2E89, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.041
- Blueberry #464196 ΔE 0.052
- Imperial Purple #480CA8 ΔE 0.066
- Indigo #4B0082 ΔE 0.069
- Sapphire #2138AB ΔE 0.071
- Cobalt #1E488F ΔE 0.072
- Indigo Blue #3A18B1 ΔE 0.073
- Chrysanthemum #560BAD ΔE 0.079
Use #3F2E89 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.