#643667
Closest named color: Brownish Purple (#76424E). oklch(41% 0.096 324.9), rgb(100, 54, 103).
Aa
White text reads best on this color (9.26:1).
About this color
#643667 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.096 and its hue 325°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Brownish Purple (#76424E), ΔE 0.072 away. White text reads best on it, at 9.26:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.096) |
| Temperature | in between |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.26:1 |
| White text | 9.26:1 |
Values
| HEX | #643667 |
| RGB | rgb(100, 54, 103) |
| HSL | hsl(296, 31%, 31%) |
| OKLCH | oklch(41% 0.096 324.9) |
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 #643667 | 9.26:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #643667 | 2.26:1 | Fails | Lc 12.8 | Not readable |
| #643667 text on white | 9.26:1 | AAA | Lc 91.1 | Preferred for body text |
| #643667 text on black | 2.26:1 | Fails | Lc -11.2 | 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
#F0E6F0
oklch(93.6% 0.017 325.7)
-
Step 200
200
#E4D2E5
oklch(88.4% 0.032 324.3)
-
Step 300
300
#D4B5D5
oklch(81% 0.056 325.1)
-
Step 400
400
#BD8DC0
oklch(70.6% 0.09 324.5)
-
Step 500
500
#AC70B0
oklch(63.1% 0.115 324.6)
-
Step 600
600
#97579B
oklch(55.5% 0.125 325)
-
Step 700
700
#814785
oklch(49.1% 0.116 324.8)
-
Step 800
800 (this color)
#643667
oklch(41% 0.096 324.9)
-
Step 900
900
#553357
oklch(37.7% 0.074 324.9)
-
Step 950
950
#321E33
oklch(27% 0.047 325.1)
#643667 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) | #314469 | 0.091 |
| Deuteranopia (no green cones) | #3E4965 | 0.081 |
| Tritanopia (no blue cones) | #663B49 | 0.057 |
| Achromatopsia (no color) | #474747 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643667
#643667
oklch(41% 0.096 324.9)
- #235827
#235827
oklch(41.2% 0.097 144.9)
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 #643667, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.072
- Purple Brown #673A3F ΔE 0.072
- Grape Purple #5D1451 ΔE 0.078
- Dark Slate Blue #483D8B ΔE 0.078
- Velvet #750851 ΔE 0.080
- Rich Purple #720058 ΔE 0.083
- Rebecca Purple #663399 ΔE 0.084
- Dusk #4E5481 ΔE 0.088
Use #643667 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.