#643361
Closest named color: Purple Brown (#673A3F). oklch(40.2% 0.096 329.5), rgb(100, 51, 97).
Aa
White text reads best on this color (9.59:1).
About this color
#643361 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.096 and its hue 329°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.067 away. White text reads best on it, at 9.59:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.096) |
| Temperature | in between |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.18:1 |
| White text | 9.59:1 |
Values
| HEX | #643361 |
| RGB | rgb(100, 51, 97) |
| HSL | hsl(304, 32%, 30%) |
| OKLCH | oklch(40.2% 0.096 329.5) |
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 #643361 | 9.59:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #643361 | 2.18:1 | Fails | Lc 12.0 | Not readable |
| #643361 text on white | 9.59:1 | AAA | Lc 91.9 | Preferred for body text |
| #643361 text on black | 2.18:1 | Fails | Lc -10.5 | 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
#F0E6EF
oklch(93.5% 0.016 328.8)
-
Step 200
200
#E5D2E3
oklch(88.4% 0.031 329.1)
-
Step 300
300
#D6B4D2
oklch(80.9% 0.056 329.9)
-
Step 400
400
#C08CBC
oklch(70.6% 0.09 329.1)
-
Step 500
500
#B06FAB
oklch(63.2% 0.115 329.6)
-
Step 600
600
#9B5696
oklch(55.6% 0.124 329.8)
-
Step 700
700
#844680
oklch(49.1% 0.115 329.6)
-
Step 800
800 (this color)
#643361
oklch(40.2% 0.096 329.5)
-
Step 900
900
#573255
oklch(37.7% 0.075 328.9)
-
Step 950
950
#331E32
oklch(27.1% 0.047 328.4)
#643361 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) | #304163 | 0.094 |
| Deuteranopia (no green cones) | #3E4760 | 0.083 |
| Tritanopia (no blue cones) | #673745 | 0.053 |
| Achromatopsia (no color) | #454545 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643361
#643361
oklch(40.2% 0.096 329.5)
- #18562A
#18562A
oklch(40.2% 0.096 149.4)
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 #643361, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.067
- Grape Purple #5D1451 ΔE 0.069
- Brownish Purple #76424E ΔE 0.071
- Velvet #750851 ΔE 0.072
- Rich Purple #720058 ΔE 0.076
- Red Purple #820747 ΔE 0.086
- Dark Slate Blue #483D8B ΔE 0.087
- Merlot #730039 ΔE 0.091
Use #643361 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.