#3F2371
Closest named color: Royal Purple (#4B006E). oklch(34% 0.128 295.2), rgb(63, 35, 113).
Aa
White text reads best on this color (12.42:1).
About this color
#3F2371 is a dark, moderately saturated purple. In OKLCH its lightness is 34%, its chroma 0.128 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Royal Purple (#4B006E), ΔE 0.054 away. White text reads best on it, at 12.42:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.128) |
| Temperature | in between |
| Nearest name | Royal Purple (#4B006E) |
| Black text | 1.69:1 |
| White text | 12.42:1 |
Values
| HEX | #3F2371 |
| RGB | rgb(63, 35, 113) |
| HSL | hsl(262, 53%, 29%) |
| OKLCH | oklch(34% 0.128 295.2) |
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 #3F2371 | 12.42:1 | AAA | Lc -101.3 | Preferred for body text |
| Black text on #3F2371 | 1.69:1 | Fails | Lc 0.0 | Not readable |
| #3F2371 text on white | 12.42:1 | AAA | Lc 97.8 | Preferred for body text |
| #3F2371 text on black | 1.69:1 | 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
#F6F4FD
oklch(97.1% 0.012 296.4)
-
Step 100
100
#EBE7FB
oklch(93.7% 0.027 295)
-
Step 200
200
#DBD3F9
oklch(88.5% 0.052 295)
-
Step 300
300
#C5B5F8
oklch(81% 0.095 295.2)
-
Step 400
400
#A98BF5
oklch(70.8% 0.153 295.3)
-
Step 500
500
#9569F1
oklch(63.1% 0.196 295.1)
-
Step 600
600
#814CDF
oklch(55.7% 0.212 295.2)
-
Step 700
700
#6D3BC2
oklch(49.1% 0.198 295)
-
Step 800
800
#59329D
oklch(42.7% 0.164 295.3)
-
Step 900
900 (this color)
#3F2371
oklch(34% 0.128 295.2)
-
Step 950
950
#2A1C49
oklch(27% 0.081 294.8)
#3F2371 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) | #003573 | 0.082 |
| Deuteranopia (no green cones) | #00336F | 0.082 |
| Tritanopia (no blue cones) | #323546 | 0.099 |
| Achromatopsia (no color) | #343434 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F2371
#3F2371
oklch(34% 0.128 295.2)
- #373C00
#373C00
oklch(34% 0.077 114.9)
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 #3F2371, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Purple #4B006E ΔE 0.054
- Indigo #4B0082 ΔE 0.054
- Midnight Blue #191970 ΔE 0.075
- Dark Slate Blue #483D8B ΔE 0.078
- Plum Purple #4E0550 ΔE 0.081
- Prussian Blue #1D3557 ΔE 0.086
- Marine #042E60 ΔE 0.087
- Marine Blue #01386A ΔE 0.087
Use #3F2371 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.