#66396B
Closest named color: Brownish Purple (#76424E). oklch(42% 0.097 323.4), rgb(102, 57, 107).
Aa
White text reads best on this color (8.88:1).
About this color
#66396B is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.097 and its hue 323°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Brownish Purple (#76424E), ΔE 0.070 away. White text reads best on it, at 8.88:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.097) |
| Temperature | in between |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.36:1 |
| White text | 8.88:1 |
Values
| HEX | #66396B |
| RGB | rgb(102, 57, 107) |
| HSL | hsl(294, 30%, 32%) |
| OKLCH | oklch(42% 0.097 323.4) |
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 #66396B | 8.88:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #66396B | 2.36:1 | Fails | Lc 13.9 | Not readable |
| #66396B text on white | 8.88:1 | AAA | Lc 90.1 | Preferred for body text |
| #66396B text on black | 2.36:1 | Fails | Lc -12.2 | 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 800.
-
Step 50
50
#F8F4F8
oklch(97.1% 0.007 325.6)
-
Step 100
100
#EFE6F0
oklch(93.5% 0.016 322.7)
-
Step 200
200
#E4D3E5
oklch(88.6% 0.03 324.2)
-
Step 300
300
#D3B5D6
oklch(80.9% 0.056 323.2)
-
Step 400
400
#BC8EC1
oklch(70.7% 0.089 323.2)
-
Step 500
500
#AB70B1
oklch(63% 0.116 323.6)
-
Step 600
600
#96579D
oklch(55.5% 0.126 323.4)
-
Step 700
700
#804786
oklch(49.1% 0.117 323.6)
-
Step 800
800 (this color)
#66396B
oklch(42% 0.097 323.4)
-
Step 900
900
#553358
oklch(37.7% 0.075 324)
-
Step 950
950
#321E34
oklch(27% 0.048 323.6)
#66396B 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) | #33466D | 0.089 |
| Deuteranopia (no green cones) | #404C69 | 0.081 |
| Tritanopia (no blue cones) | #683F4D | 0.058 |
| Achromatopsia (no color) | #4A4A4A | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66396B
#66396B
oklch(42% 0.097 323.4)
- #285A28
#285A28
oklch(42% 0.096 143.6)
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 #66396B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.070
- Purple Brown #673A3F ΔE 0.075
- Dark Slate Blue #483D8B ΔE 0.076
- Rebecca Purple #663399 ΔE 0.080
- Dusk #4E5481 ΔE 0.081
- Twilight #4E518B ΔE 0.081
- Dusty Grape #545775 ΔE 0.084
- Light Eggplant #894585 ΔE 0.085
Use #66396B 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.