#3F3D5D
Closest named color: Dark Grey Blue (#29465B). oklch(37.6% 0.054 286.3), rgb(63, 61, 93).
Aa
White text reads best on this color (10.30:1).
About this color
#3F3D5D is a dark, muted purple. In OKLCH its lightness is 38%, its chroma 0.054 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.040 away. White text reads best on it, at 10.30:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.03:1 |
| White text | 10.30:1 |
Values
| HEX | #3F3D5D |
| RGB | rgb(63, 61, 93) |
| HSL | hsl(244, 21%, 30%) |
| OKLCH | oklch(37.6% 0.054 286.3) |
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 #3F3D5D | 10.30:1 | AAA | Lc -97.9 | Preferred for body text |
| Black text on #3F3D5D | 2.03:1 | Fails | Lc 10.0 | Not readable |
| #3F3D5D text on white | 10.30:1 | AAA | Lc 93.9 | Preferred for body text |
| #3F3D5D text on black | 2.03:1 | Fails | Lc -8.6 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E9E9F2
oklch(93.7% 0.012 286.2)
-
Step 200
200
#D7D7E8
oklch(88.4% 0.023 285.9)
-
Step 300
300
#BEBDDA
oklch(80.8% 0.041 287)
-
Step 400
400
#9D9BC8
oklch(70.7% 0.065 286.6)
-
Step 500
500
#8582BA
oklch(63.1% 0.084 286.2)
-
Step 600
600
#6F6BA6
oklch(55.6% 0.091 286.2)
-
Step 700
700
#5D598E
oklch(49.1% 0.084 286.3)
-
Step 800
800
#4C4973
oklch(42.7% 0.069 286.4)
-
Step 900
900 (this color)
#3F3D5D
oklch(37.6% 0.054 286.3)
-
Step 950
950
#252437
oklch(27% 0.035 286.2)
#3F3D5D 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) | #34415E | 0.020 |
| Deuteranopia (no green cones) | #33405C | 0.020 |
| Tritanopia (no blue cones) | #384349 | 0.046 |
| Achromatopsia (no color) | #404040 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F3D5D
#3F3D5D
oklch(37.6% 0.054 286.3)
- #45431F
#45431F
oklch(37.6% 0.054 105.9)
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 #3F3D5D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.040
- Charcoal #264653 ΔE 0.050
- Charcoal Grey #3C4142 ΔE 0.053
- Onyx #343A40 ΔE 0.054
- Dark Blue Grey #1F3B4D ΔE 0.056
- Prussian Blue #1D3557 ΔE 0.059
- Gunmetal #293241 ΔE 0.068
- Twilight Blue #0A437A ΔE 0.070
Use #3F3D5D 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.