#3F275E
Closest named color: Prussian Blue (#1D3557). oklch(33.1% 0.095 301.5), rgb(63, 39, 94).
Aa
White text reads best on this color (12.62:1).
About this color
#3F275E is a dark, moderately saturated purple. In OKLCH its lightness is 33%, its chroma 0.095 and its hue 302°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.067 away. White text reads best on it, at 12.62:1.
| Hue family | Purples |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.095) |
| Temperature | in between |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.66:1 |
| White text | 12.62:1 |
Values
| HEX | #3F275E |
| RGB | rgb(63, 39, 94) |
| HSL | hsl(266, 41%, 26%) |
| OKLCH | oklch(33.1% 0.095 301.5) |
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 #3F275E | 12.62:1 | AAA | Lc -101.8 | Preferred for body text |
| Black text on #3F275E | 1.66:1 | Fails | Lc 0.0 | Not readable |
| #3F275E text on white | 12.62:1 | AAA | Lc 98.4 | Preferred for body text |
| #3F275E text on black | 1.66:1 | 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
#ECE7F6
oklch(93.6% 0.021 301.1)
-
Step 200
200
#DDD4F0
oklch(88.6% 0.039 300.2)
-
Step 300
300
#C8B6E8
oklch(80.8% 0.072 301.3)
-
Step 400
400
#AD8FDC
oklch(70.6% 0.114 301.5)
-
Step 500
500
#9A71D3
oklch(63.1% 0.147 301.6)
-
Step 600
600
#8558C0
oklch(55.7% 0.159 301.4)
-
Step 700
700
#7147A5
oklch(49.1% 0.147 301.8)
-
Step 800
800
#5C3B86
oklch(42.8% 0.122 301.8)
-
Step 900
900 (this color)
#3F275E
oklch(33.1% 0.095 301.5)
-
Step 950
950
#2C1E3F
oklch(26.9% 0.062 302)
#3F275E 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) | #123360 | 0.070 |
| Deuteranopia (no green cones) | #1A335D | 0.064 |
| Tritanopia (no blue cones) | #39323E | 0.073 |
| Achromatopsia (no color) | #333333 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F275E
#3F275E
oklch(33.1% 0.095 301.5)
- #2F3C00
#2F3C00
oklch(33.2% 0.081 122.2)
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 #3F275E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.067
- Space Cadet #2B2D42 ΔE 0.067
- Plum Purple #4E0550 ΔE 0.069
- Royal Purple #4B006E ΔE 0.070
- Grape Purple #5D1451 ΔE 0.072
- Deep Violet #490648 ΔE 0.072
- Gunmetal #293241 ΔE 0.077
- Marine #042E60 ΔE 0.079
Use #3F275E 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.