#643765
Closest named color: Purple Brown (#673A3F). oklch(41.1% 0.092 326.3), rgb(100, 55, 101).
Aa
White text reads best on this color (9.22:1).
About this color
#643765 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.092 and its hue 326°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.068 away. White text reads best on it, at 9.22:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.092) |
| Temperature | in between |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.27:1 |
| White text | 9.22:1 |
Values
| HEX | #643765 |
| RGB | rgb(100, 55, 101) |
| HSL | hsl(299, 29%, 31%) |
| OKLCH | oklch(41.1% 0.092 326.3) |
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 #643765 | 9.22:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #643765 | 2.27:1 | Fails | Lc 12.9 | Not readable |
| #643765 text on white | 9.22:1 | AAA | Lc 91.0 | Preferred for body text |
| #643765 text on black | 2.27:1 | Fails | Lc -11.3 | 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
#F8F4F8
oklch(97.1% 0.007 325.6)
-
Step 100
100
#F0E6EF
oklch(93.5% 0.016 328.8)
-
Step 200
200
#E4D3E4
oklch(88.6% 0.029 325.8)
-
Step 300
300
#D4B5D3
oklch(80.9% 0.054 327.1)
-
Step 400
400
#BD8EBD
oklch(70.7% 0.085 326.4)
-
Step 500
500
#AC71AD
oklch(63.1% 0.11 326.2)
-
Step 600
600
#975898
oklch(55.6% 0.12 326.5)
-
Step 700
700
#814882
oklch(49.2% 0.112 326.5)
-
Step 800
800 (this color)
#643765
oklch(41.1% 0.092 326.3)
-
Step 900
900
#553356
oklch(37.6% 0.072 325.9)
-
Step 950
950
#321E32
oklch(26.9% 0.046 326.8)
#643765 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) | #334467 | 0.087 |
| Deuteranopia (no green cones) | #3F4A64 | 0.080 |
| Tritanopia (no blue cones) | #663C49 | 0.054 |
| Achromatopsia (no color) | #474747 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643765
#643765
oklch(41.1% 0.092 326.3)
- #23582A
#23582A
oklch(41.2% 0.093 146.2)
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 #643765, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.068
- Brownish Purple #76424E ΔE 0.068
- Grape Purple #5D1451 ΔE 0.080
- Dark Slate Blue #483D8B ΔE 0.081
- Velvet #750851 ΔE 0.081
- Rich Purple #720058 ΔE 0.085
- Dusk #4E5481 ΔE 0.087
- Dusty Grape #545775 ΔE 0.088
Use #643765 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.