#3F384A
Closest named color: Onyx (#343A40). oklch(35.5% 0.032 302.5), rgb(63, 56, 74).
Aa
White text reads best on this color (11.19:1).
About this color
#3F384A is a dark, muted purple. In OKLCH its lightness is 36%, its chroma 0.032 and its hue 303°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.028 away. White text reads best on it, at 11.19:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | muted (0.032) |
| Temperature | in between |
| Nearest name | Onyx (#343A40) |
| Black text | 1.87:1 |
| White text | 11.19:1 |
Values
| HEX | #3F384A |
| RGB | rgb(63, 56, 74) |
| HSL | hsl(263, 14%, 25%) |
| OKLCH | oklch(35.5% 0.032 302.5) |
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 #3F384A | 11.19:1 | AAA | Lc -99.6 | Preferred for body text |
| Black text on #3F384A | 1.87:1 | Fails | Lc 8.0 | Not readable |
| #3F384A text on white | 11.19:1 | AAA | Lc 95.9 | Preferred for body text |
| #3F384A text on black | 1.87:1 | 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
#F6F5F7
oklch(97.1% 0.003 308.4)
-
Step 100
100
#EBE9EE
oklch(93.7% 0.007 304.2)
-
Step 200
200
#DBD7E1
oklch(88.5% 0.014 304.1)
-
Step 300
300
#C3BDCE
oklch(80.8% 0.024 301.9)
-
Step 400
400
#A59BB5
oklch(70.7% 0.039 302.9)
-
Step 500
500
#8F83A3
oklch(63.2% 0.049 302.1)
-
Step 600
600
#796C8E
oklch(55.6% 0.054 302.1)
-
Step 700
700
#665A78
oklch(49.1% 0.049 302.9)
-
Step 800
800
#534A62
oklch(42.7% 0.041 301.8)
-
Step 900
900 (this color)
#3F384A
oklch(35.5% 0.032 302.5)
-
Step 950
950
#28242F
oklch(26.9% 0.021 301.6)
#3F384A 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) | #353B4B | 0.018 |
| Deuteranopia (no green cones) | #363B49 | 0.018 |
| Tritanopia (no blue cones) | #3D3B3E | 0.026 |
| Achromatopsia (no color) | #3B3B3B | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F384A
#3F384A
oklch(35.5% 0.032 302.5)
- #393F2C
#393F2C
oklch(35.6% 0.032 122.3)
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 #3F384A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.028
- Charcoal Grey #3C4142 ΔE 0.036
- Gunmetal #293241 ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.052
- Charcoal #264653 ΔE 0.052
- Space Cadet #2B2D42 ΔE 0.053
- Prussian Blue #1D3557 ΔE 0.058
Use #3F384A 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.