#3F2E63
Closest named color: Prussian Blue (#1D3557). oklch(34.8% 0.09 296.2), rgb(63, 46, 99).
Aa
White text reads best on this color (11.78:1).
About this color
#3F2E63 is a dark, moderately saturated purple. In OKLCH its lightness is 35%, its chroma 0.090 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.060 away. White text reads best on it, at 11.78:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.090) |
| Temperature | in between |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.78:1 |
| White text | 11.78:1 |
Values
| HEX | #3F2E63 |
| RGB | rgb(63, 46, 99) |
| HSL | hsl(259, 37%, 28%) |
| OKLCH | oklch(34.8% 0.09 296.2) |
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 #3F2E63 | 11.78:1 | AAA | Lc -100.5 | Preferred for body text |
| Black text on #3F2E63 | 1.78:1 | Fails | Lc 0.0 | Not readable |
| #3F2E63 text on white | 11.78:1 | AAA | Lc 96.9 | Preferred for body text |
| #3F2E63 text on black | 1.78:1 | 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#EBE7F6
oklch(93.5% 0.021 298.2)
-
Step 200
200
#DBD5F0
oklch(88.6% 0.037 295.8)
-
Step 300
300
#C4B8E8
oklch(80.9% 0.068 296.3)
-
Step 400
400
#A792DD
oklch(70.7% 0.11 296.4)
-
Step 500
500
#9276D3
oklch(63.2% 0.138 296.1)
-
Step 600
600
#7D5CC0
oklch(55.6% 0.151 296.4)
-
Step 700
700
#694BA6
oklch(49% 0.141 296)
-
Step 800
800
#563E86
oklch(42.6% 0.116 296.5)
-
Step 900
900 (this color)
#3F2E63
oklch(34.8% 0.09 296.2)
-
Step 950
950
#29203F
oklch(27% 0.057 295.7)
#3F2E63 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) | #1B3865 | 0.057 |
| Deuteranopia (no green cones) | #1E3762 | 0.054 |
| Tritanopia (no blue cones) | #373844 | 0.070 |
| Achromatopsia (no color) | #383838 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F2E63
#3F2E63
oklch(34.8% 0.09 296.2)
- #383F00
#383F00
oklch(34.9% 0.08 116.6)
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 #3F2E63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.060
- Space Cadet #2B2D42 ΔE 0.070
- Marine Blue #01386A ΔE 0.073
- Gunmetal #293241 ΔE 0.076
- Dark Slate Blue #483D8B ΔE 0.077
- Dark Blue Grey #1F3B4D ΔE 0.077
- Marine #042E60 ΔE 0.077
- Dark Grey Blue #29465B ΔE 0.081
Use #3F2E63 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.