#643A61
Closest named color: Purple Brown (#673A3F). oklch(41.4% 0.082 329.5), rgb(100, 58, 97).
Aa
White text reads best on this color (9.05:1).
About this color
#643A61 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.082 and its hue 330°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.058 away. White text reads best on it, at 9.05:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.082) |
| Temperature | in between |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.31:1 |
| White text | 9.05:1 |
Values
| HEX | #643A61 |
| RGB | rgb(100, 58, 97) |
| HSL | hsl(304, 27%, 31%) |
| OKLCH | oklch(41.4% 0.082 329.5) |
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 #643A61 | 9.05:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #643A61 | 2.31:1 | Fails | Lc 13.3 | Not readable |
| #643A61 text on white | 9.05:1 | AAA | Lc 90.6 | Preferred for body text |
| #643A61 text on black | 2.31:1 | Fails | Lc -11.7 | 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
#F8F4F7
oklch(97.1% 0.006 334)
-
Step 100
100
#EFE7EE
oklch(93.6% 0.013 329.6)
-
Step 200
200
#E4D3E2
oklch(88.5% 0.027 329.5)
-
Step 300
300
#D3B6D0
oklch(80.9% 0.048 329.3)
-
Step 400
400
#BC90B8
oklch(70.8% 0.076 329.4)
-
Step 500
500
#AB73A6
oklch(63.1% 0.099 329.8)
-
Step 600
600
#965B91
oklch(55.6% 0.107 330)
-
Step 700
700
#804B7C
oklch(49.3% 0.099 329.7)
-
Step 800
800 (this color)
#643A61
oklch(41.4% 0.082 329.5)
-
Step 900
900
#543552
oklch(37.7% 0.063 329)
-
Step 950
950
#321F30
oklch(27.1% 0.041 330.4)
#643A61 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) | #384562 | 0.079 |
| Deuteranopia (no green cones) | #434B60 | 0.072 |
| Tritanopia (no blue cones) | #673D49 | 0.045 |
| Achromatopsia (no color) | #494949 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643A61
#643A61
oklch(41.4% 0.082 329.5)
- #265832
#265832
oklch(41.5% 0.083 149.4)
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 #643A61, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.058
- Brownish Purple #76424E ΔE 0.058
- Dusty Grape #545775 ΔE 0.082
- Dusk #4E5481 ΔE 0.083
- Grape Purple #5D1451 ΔE 0.086
- Dark Slate Blue #483D8B ΔE 0.086
- Velvet #750851 ΔE 0.086
- Twilight #4E518B ΔE 0.087
Use #643A61 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.