#643E69
Closest named color: Brownish Purple (#76424E). oklch(42.5% 0.083 322.7), rgb(100, 62, 105).
Aa
White text reads best on this color (8.62:1).
About this color
#643E69 is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.083 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 0.061 away. White text reads best on it, at 8.62:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.083) |
| Temperature | in between |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.43:1 |
| White text | 8.62:1 |
Values
| HEX | #643E69 |
| RGB | rgb(100, 62, 105) |
| HSL | hsl(293, 26%, 33%) |
| OKLCH | oklch(42.5% 0.083 322.7) |
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 #643E69 | 8.62:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #643E69 | 2.43:1 | Fails | Lc 14.5 | Not readable |
| #643E69 text on white | 8.62:1 | AAA | Lc 89.5 | Fine for body text |
| #643E69 text on black | 2.43:1 | Fails | Lc -12.8 | 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
#EFE7EF
oklch(93.7% 0.014 325.7)
-
Step 200
200
#E2D4E4
oklch(88.6% 0.026 321.9)
-
Step 300
300
#D0B7D3
oklch(80.9% 0.047 322.6)
-
Step 400
400
#B891BD
oklch(70.7% 0.077 322.6)
-
Step 500
500
#A675AD
oklch(63.2% 0.099 322.3)
-
Step 600
600
#915C98
oklch(55.5% 0.109 322.7)
-
Step 700
700
#7B4C82
oklch(49.1% 0.1 322.2)
-
Step 800
800 (this color)
#643E69
oklch(42.5% 0.083 322.7)
-
Step 900
900
#523556
oklch(37.6% 0.066 322.5)
-
Step 950
950
#301F32
oklch(26.9% 0.042 323)
#643E69 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) | #39496B | 0.075 |
| Deuteranopia (no green cones) | #434D68 | 0.067 |
| Tritanopia (no blue cones) | #65434E | 0.052 |
| Achromatopsia (no color) | #4C4C4C | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643E69
#643E69
oklch(42.5% 0.083 322.7)
- #315A2F
#315A2F
oklch(42.6% 0.083 143)
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 #643E69, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.061
- Purple Brown #673A3F ΔE 0.068
- Dusk #4E5481 ΔE 0.071
- Dusty Grape #545775 ΔE 0.071
- Twilight #4E518B ΔE 0.074
- Dark Slate Blue #483D8B ΔE 0.077
- Dark Mauve #874C62 ΔE 0.084
- Light Eggplant #894585 ΔE 0.086
Use #643E69 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.