#643768
Closest named color: Brownish Purple (#76424E). oklch(41.3% 0.096 324.1), rgb(100, 55, 104).
Aa
White text reads best on this color (9.17:1).
About this color
#643768 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.096 and its hue 324°. 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 9.17:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.096) |
| Temperature | in between |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.28:1 |
| White text | 9.17:1 |
Values
| HEX | #643768 |
| RGB | rgb(100, 55, 104) |
| HSL | hsl(295, 31%, 31%) |
| OKLCH | oklch(41.3% 0.096 324.1) |
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 #643768 | 9.17:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #643768 | 2.28:1 | Fails | Lc 13.1 | Not readable |
| #643768 text on white | 9.17:1 | AAA | Lc 90.9 | Preferred for body text |
| #643768 text on black | 2.28:1 | Fails | Lc -11.4 | 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
#E4D3E5
oklch(88.6% 0.03 324.2)
-
Step 300
300
#D3B5D5
oklch(80.9% 0.055 324.1)
-
Step 400
400
#BD8EC0
oklch(70.8% 0.089 324.5)
-
Step 500
500
#AB70B0
oklch(63% 0.114 324.1)
-
Step 600
600
#96589C
oklch(55.6% 0.123 323.8)
-
Step 700
700
#804785
oklch(49% 0.116 324.2)
-
Step 800
800 (this color)
#643768
oklch(41.3% 0.096 324.1)
-
Step 900
900
#553358
oklch(37.7% 0.075 324)
-
Step 950
950
#321E33
oklch(27% 0.047 325.1)
#643768 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) | #31446A | 0.090 |
| Deuteranopia (no green cones) | #3E4A67 | 0.081 |
| Tritanopia (no blue cones) | #663D4A | 0.058 |
| Achromatopsia (no color) | #484848 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643768
#643768
oklch(41.3% 0.096 324.1)
- #255827
#255827
oklch(41.2% 0.096 144.3)
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 #643768, 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 0.073
- Dark Slate Blue #483D8B ΔE 0.077
- Grape Purple #5D1451 ΔE 0.081
- Velvet #750851 ΔE 0.082
- Rebecca Purple #663399 ΔE 0.083
- Dusk #4E5481 ΔE 0.085
- Rich Purple #720058 ΔE 0.085
Use #643768 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.