#3F3F67
Closest named color: Dark Grey Blue (#29465B). oklch(38.7% 0.067 282.8), rgb(63, 63, 103).
Aa
White text reads best on this color (9.91:1).
About this color
#3F3F67 is a dark, muted purple. In OKLCH its lightness is 39%, its chroma 0.067 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.045 away. White text reads best on it, at 9.91:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.11:1 |
| White text | 9.91:1 |
Values
| HEX | #3F3F67 |
| RGB | rgb(63, 63, 103) |
| HSL | hsl(240, 24%, 33%) |
| OKLCH | oklch(38.7% 0.067 282.8) |
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 #3F3F67 | 9.91:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #3F3F67 | 2.11:1 | Fails | Lc 11.0 | Not readable |
| #3F3F67 text on white | 9.91:1 | AAA | Lc 93.0 | Preferred for body text |
| #3F3F67 text on black | 2.11:1 | Fails | Lc -9.5 | 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E8E9F4
oklch(93.6% 0.015 281.9)
-
Step 200
200
#D6D7EC
oklch(88.5% 0.029 283.6)
-
Step 300
300
#BBBDE1
oklch(80.9% 0.051 282.7)
-
Step 400
400
#999BD2
oklch(70.8% 0.08 282.5)
-
Step 500
500
#8181C6
oklch(63.2% 0.103 283.1)
-
Step 600
600
#6A69B3
oklch(55.5% 0.113 282.7)
-
Step 700
700
#59579A
oklch(49% 0.106 283.1)
-
Step 800
800
#49487D
oklch(42.8% 0.087 283)
-
Step 900
900 (this color)
#3F3F67
oklch(38.7% 0.067 282.8)
-
Step 950
950
#23243B
oklch(27.1% 0.043 281.2)
#3F3F67 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) | #324469 | 0.022 |
| Deuteranopia (no green cones) | #304266 | 0.023 |
| Tritanopia (no blue cones) | #34474E | 0.059 |
| Achromatopsia (no color) | #434343 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F3F67
#3F3F67
oklch(38.7% 0.067 282.8)
- #4B4515
#4B4515
oklch(38.6% 0.067 102.2)
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 #3F3F67, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.045
- Charcoal #264653 ΔE 0.058
- Twilight Blue #0A437A ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.064
- Prussian Blue #1D3557 ΔE 0.066
- Dark Blue Grey #1F3B4D ΔE 0.067
- Charcoal Grey #3C4142 ΔE 0.067
- Onyx #343A40 ΔE 0.070
Use #3F3F67 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.