#3F415D
Closest named color: Dark Grey Blue (#29465B). oklch(38.6% 0.048 280.8), rgb(63, 65, 93).
Aa
White text reads best on this color (9.87:1).
About this color
#3F415D is a dark, muted purple. In OKLCH its lightness is 39%, its chroma 0.048 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.033 away. White text reads best on it, at 9.87:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.12:1 |
| White text | 9.87:1 |
Values
| HEX | #3F415D |
| RGB | rgb(63, 65, 93) |
| HSL | hsl(236, 19%, 31%) |
| OKLCH | oklch(38.6% 0.048 280.8) |
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 #3F415D | 9.87:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #3F415D | 2.12:1 | Fails | Lc 11.0 | Not readable |
| #3F415D text on white | 9.87:1 | AAA | Lc 92.9 | Preferred for body text |
| #3F415D text on black | 2.12:1 | Fails | Lc -9.6 | 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
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D6D8E6
oklch(88.5% 0.019 279.5)
-
Step 300
300
#BCBED8
oklch(80.8% 0.037 282.1)
-
Step 400
400
#9A9DC4
oklch(70.7% 0.057 281.4)
-
Step 500
500
#8185B5
oklch(63.2% 0.072 280.4)
-
Step 600
600
#6B6EA1
oklch(55.7% 0.079 280.9)
-
Step 700
700
#595C8A
oklch(49.2% 0.073 280.5)
-
Step 800
800
#494B70
oklch(42.7% 0.061 281.1)
-
Step 900
900 (this color)
#3F415D
oklch(38.6% 0.048 280.8)
-
Step 950
950
#242535
oklch(27.1% 0.03 281.4)
#3F415D 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) | #39445E | 0.012 |
| Deuteranopia (no green cones) | #37425C | 0.013 |
| Tritanopia (no blue cones) | #37464B | 0.042 |
| Achromatopsia (no color) | #434343 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F415D
#3F415D
oklch(38.6% 0.048 280.8)
- #494526
#494526
oklch(38.6% 0.048 101.9)
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 #3F415D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.033
- Charcoal #264653 ΔE 0.043
- Charcoal Grey #3C4142 ΔE 0.048
- Onyx #343A40 ΔE 0.055
- Dark Blue Grey #1F3B4D ΔE 0.058
- Dark Slate Gray #2F4F4F ΔE 0.061
- Prussian Blue #1D3557 ΔE 0.066
- Twilight Blue #0A437A ΔE 0.070
Use #3F415D 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.