#3F2F58
Closest named color: Prussian Blue (#1D3557). oklch(34.3% 0.072 300.7), rgb(63, 47, 88).
Aa
White text reads best on this color (11.93:1).
About this color
#3F2F58 is a dark, moderately saturated purple. In OKLCH its lightness is 34%, its chroma 0.072 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.054 away. White text reads best on it, at 11.93:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.072) |
| Temperature | in between |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.75:1 |
| White text | 11.93:1 |
Values
| HEX | #3F2F58 |
| RGB | rgb(63, 47, 88) |
| HSL | hsl(263, 30%, 26%) |
| OKLCH | oklch(34.3% 0.072 300.7) |
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 #3F2F58 | 11.93:1 | AAA | Lc -100.8 | Preferred for body text |
| Black text on #3F2F58 | 1.75:1 | Fails | Lc 0.0 | Not readable |
| #3F2F58 text on white | 11.93:1 | AAA | Lc 97.3 | Preferred for body text |
| #3F2F58 text on black | 1.75:1 | 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EBE8F3
oklch(93.7% 0.015 298.6)
-
Step 200
200
#DCD5EA
oklch(88.5% 0.029 301)
-
Step 300
300
#C6B9DF
oklch(80.9% 0.055 300.8)
-
Step 400
400
#A994CF
oklch(70.6% 0.087 300.5)
-
Step 500
500
#9579C2
oklch(63.1% 0.111 300.9)
-
Step 600
600
#7F61AE
oklch(55.6% 0.12 300.5)
-
Step 700
700
#6C5096
oklch(49.2% 0.112 300.8)
-
Step 800
800
#584279
oklch(42.8% 0.091 301.1)
-
Step 900
900 (this color)
#3F2F58
oklch(34.3% 0.072 300.7)
-
Step 950
950
#2A2139
oklch(27% 0.045 300.7)
#3F2F58 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) | #24375A | 0.047 |
| Deuteranopia (no green cones) | #273757 | 0.044 |
| Tritanopia (no blue cones) | #3A363F | 0.056 |
| Achromatopsia (no color) | #373737 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F2F58
#3F2F58
oklch(34.3% 0.072 300.7)
- #343E0C
#343E0C
oklch(34.3% 0.072 120.2)
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 #3F2F58, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.054
- Space Cadet #2B2D42 ΔE 0.054
- Gunmetal #293241 ΔE 0.060
- Onyx #343A40 ΔE 0.065
- Dark Blue Grey #1F3B4D ΔE 0.065
- Dark Grey Blue #29465B ΔE 0.074
- Marine Blue #01386A ΔE 0.076
- Charcoal Grey #3C4142 ΔE 0.077
Use #3F2F58 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.