#643D63
Closest named color: Brownish Purple (#76424E). oklch(42.1% 0.078 327.7), rgb(100, 61, 99).
Aa
White text reads best on this color (8.78:1).
About this color
#643D63 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.078 and its hue 328°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Brownish Purple (#76424E), ΔE 0.055 away. White text reads best on it, at 8.78:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.078) |
| Temperature | in between |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.38:1 |
| White text | 8.78:1 |
Values
| HEX | #643D63 |
| RGB | rgb(100, 61, 99) |
| HSL | hsl(302, 24%, 32%) |
| OKLCH | oklch(42.1% 0.078 327.7) |
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 #643D63 | 8.78:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #643D63 | 2.38:1 | Fails | Lc 14.1 | Not readable |
| #643D63 text on white | 8.78:1 | AAA | Lc 89.9 | Fine for body text |
| #643D63 text on black | 2.38:1 | Fails | Lc -12.3 | 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
#E3D4E2
oklch(88.6% 0.025 327.8)
-
Step 300
300
#D1B7D0
oklch(80.9% 0.045 327.2)
-
Step 400
400
#BA91B8
oklch(70.8% 0.073 327.9)
-
Step 500
500
#A875A6
oklch(63.1% 0.093 327.9)
-
Step 600
600
#935D92
oklch(55.6% 0.102 327.5)
-
Step 700
700
#7D4C7C
oklch(49.1% 0.095 327.6)
-
Step 800
800 (this color)
#643D63
oklch(42.1% 0.078 327.7)
-
Step 900
900
#533652
oklch(37.8% 0.06 327.9)
-
Step 950
950
#312030
oklch(27.1% 0.038 328.6)
#643D63 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) | #3A4764 | 0.074 |
| Deuteranopia (no green cones) | #444C62 | 0.067 |
| Tritanopia (no blue cones) | #66404B | 0.044 |
| Achromatopsia (no color) | #4B4B4B | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643D63
#643D63
oklch(42.1% 0.078 327.7)
- #2C5934
#2C5934
oklch(42.1% 0.079 148.1)
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 #643D63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.055
- Purple Brown #673A3F ΔE 0.059
- Dusty Grape #545775 ΔE 0.074
- Dusk #4E5481 ΔE 0.076
- Twilight #4E518B ΔE 0.081
- Dark Mauve #874C62 ΔE 0.083
- Dark Slate Blue #483D8B ΔE 0.085
- Light Eggplant #894585 ΔE 0.091
Use #643D63 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.