#3F3554
Closest named color: Onyx (#343A40). oklch(35.3% 0.054 298.4), rgb(63, 53, 84).
Aa
White text reads best on this color (11.35:1).
About this color
#3F3554 is a dark, muted purple. In OKLCH its lightness is 35%, its chroma 0.054 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.047 away. White text reads best on it, at 11.35:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | muted (0.054) |
| Temperature | in between |
| Nearest name | Onyx (#343A40) |
| Black text | 1.84:1 |
| White text | 11.35:1 |
Values
| HEX | #3F3554 |
| RGB | rgb(63, 53, 84) |
| HSL | hsl(259, 23%, 27%) |
| OKLCH | oklch(35.3% 0.054 298.4) |
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 #3F3554 | 11.35:1 | AAA | Lc -99.9 | Preferred for body text |
| Black text on #3F3554 | 1.84:1 | Fails | Lc 7.7 | Not readable |
| #3F3554 text on white | 11.35:1 | AAA | Lc 96.2 | Preferred for body text |
| #3F3554 text on black | 1.84:1 | 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
#F6F5F9
oklch(97.2% 0.005 297.7)
-
Step 100
100
#EBE8F1
oklch(93.6% 0.012 301.3)
-
Step 200
200
#DBD6E6
oklch(88.5% 0.022 300.2)
-
Step 300
300
#C3BBD8
oklch(80.8% 0.041 298.1)
-
Step 400
400
#A598C4
oklch(70.6% 0.065 298.3)
-
Step 500
500
#907EB5
oklch(63% 0.083 299)
-
Step 600
600
#7A67A1
oklch(55.5% 0.09 298.5)
-
Step 700
700
#67568A
oklch(49.2% 0.083 298.3)
-
Step 800
800
#544670
oklch(42.7% 0.07 298.7)
-
Step 900
900 (this color)
#3F3554
oklch(35.3% 0.054 298.4)
-
Step 950
950
#282335
oklch(27% 0.034 296.8)
#3F3554 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) | #2E3A55 | 0.030 |
| Deuteranopia (no green cones) | #2F3A53 | 0.029 |
| Tritanopia (no blue cones) | #3B3A40 | 0.044 |
| Achromatopsia (no color) | #3A3A3A | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F3554
#3F3554
oklch(35.3% 0.054 298.4)
- #393F1D
#393F1D
oklch(35.3% 0.054 117.5)
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 #3F3554, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.047
- Prussian Blue #1D3557 ΔE 0.052
- Gunmetal #293241 ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.053
- Space Cadet #2B2D42 ΔE 0.053
- Charcoal Grey #3C4142 ΔE 0.057
- Dark Grey Blue #29465B ΔE 0.057
- Charcoal #264653 ΔE 0.062
Use #3F3554 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.