#643A63
Closest named color: Brownish Purple (#76424E). oklch(41.5% 0.084 327.8), rgb(100, 58, 99).
Aa
White text reads best on this color (9.02:1).
About this color
#643A63 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.084 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 0.060 away. White text reads best on it, at 9.02:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.084) |
| Temperature | in between |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.32:1 |
| White text | 9.02:1 |
Values
| HEX | #643A63 |
| RGB | rgb(100, 58, 99) |
| HSL | hsl(301, 27%, 31%) |
| OKLCH | oklch(41.5% 0.084 327.8) |
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 #643A63 | 9.02:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #643A63 | 2.32:1 | Fails | Lc 13.4 | Not readable |
| #643A63 text on white | 9.02:1 | AAA | Lc 90.5 | Preferred for body text |
| #643A63 text on black | 2.32:1 | Fails | Lc -11.8 | 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
#E4D3E2
oklch(88.5% 0.027 329.5)
-
Step 300
300
#D3B6D1
oklch(80.9% 0.049 328.2)
-
Step 400
400
#BC8FBA
oklch(70.7% 0.08 327.8)
-
Step 500
500
#AA73A9
oklch(63.1% 0.101 327.3)
-
Step 600
600
#955B94
oklch(55.6% 0.109 327.5)
-
Step 700
700
#7F4A7E
oklch(49% 0.102 327.7)
-
Step 800
800 (this color)
#643A63
oklch(41.5% 0.084 327.8)
-
Step 900
900
#543453
oklch(37.6% 0.066 327.9)
-
Step 950
950
#311F31
oklch(27% 0.041 326.6)
#643A63 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) | #374564 | 0.080 |
| Deuteranopia (no green cones) | #424B62 | 0.073 |
| Tritanopia (no blue cones) | #673E4A | 0.048 |
| Achromatopsia (no color) | #494949 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643A63
#643A63
oklch(41.5% 0.084 327.8)
- #275830
#275830
oklch(41.5% 0.085 147.9)
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 #643A63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.060
- Purple Brown #673A3F ΔE 0.061
- Dusty Grape #545775 ΔE 0.081
- Dusk #4E5481 ΔE 0.082
- Dark Slate Blue #483D8B ΔE 0.084
- Twilight #4E518B ΔE 0.085
- Grape Purple #5D1451 ΔE 0.086
- Velvet #750851 ΔE 0.087
Use #643A63 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.