#643D5B
Closest named color: Purple Brown (#673A3F). oklch(41.7% 0.07 335.6), rgb(100, 61, 91).
Aa
White text reads best on this color (8.89:1).
About this color
#643D5B is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.070 and its hue 336°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.045 away. White text reads best on it, at 8.89:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.070) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.36:1 |
| White text | 8.89:1 |
Values
| HEX | #643D5B |
| RGB | rgb(100, 61, 91) |
| HSL | hsl(314, 24%, 32%) |
| OKLCH | oklch(41.7% 0.07 335.6) |
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 #643D5B | 8.89:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #643D5B | 2.36:1 | Fails | Lc 13.7 | Not readable |
| #643D5B text on white | 8.89:1 | AAA | Lc 90.2 | Preferred for body text |
| #643D5B text on black | 2.36:1 | Fails | Lc -12.0 | 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
#F8F4F7
oklch(97.1% 0.006 334)
-
Step 100
100
#EFE7ED
oklch(93.6% 0.012 334.1)
-
Step 200
200
#E3D4DF
oklch(88.5% 0.022 335)
-
Step 300
300
#D2B7CB
oklch(80.9% 0.041 335.1)
-
Step 400
400
#BB91B1
oklch(70.6% 0.067 334.9)
-
Step 500
500
#AA769D
oklch(63.1% 0.084 336)
-
Step 600
600
#955E88
oklch(55.6% 0.092 335.8)
-
Step 700
700
#7E4D73
oklch(49% 0.085 335.4)
-
Step 800
800 (this color)
#643D5B
oklch(41.7% 0.07 335.6)
-
Step 900
900
#54364D
oklch(37.7% 0.055 335.5)
-
Step 950
950
#31202D
oklch(27% 0.034 335.2)
#643D5B 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) | #3D465C | 0.070 |
| Deuteranopia (no green cones) | #474C5A | 0.064 |
| Tritanopia (no blue cones) | #683E48 | 0.034 |
| Achromatopsia (no color) | #4A4A4A | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643D5B
#643D5B
oklch(41.7% 0.07 335.6)
- #29583C
#29583C
oklch(41.9% 0.07 155.6)
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 #643D5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.045
- Brownish Purple #76424E ΔE 0.047
- Dusty Grape #545775 ΔE 0.077
- Dark Mauve #874C62 ΔE 0.082
- Dusk #4E5481 ΔE 0.083
- Charcoal Grey #3C4142 ΔE 0.087
- Twilight #4E518B ΔE 0.090
- Velvet #750851 ΔE 0.094
Use #643D5B 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.