#643D5A
Closest named color: Purple Brown (#673A3F). oklch(41.7% 0.069 336.8), rgb(100, 61, 90).
Aa
White text reads best on this color (8.90:1).
About this color
#643D5A is a dark, muted purple. In OKLCH its lightness is 42%, its chroma 0.069 and its hue 337°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.043 away. White text reads best on it, at 8.90:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | muted (0.069) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.35:1 |
| White text | 8.90:1 |
Values
| HEX | #643D5A |
| RGB | rgb(100, 61, 90) |
| HSL | hsl(315, 24%, 32%) |
| OKLCH | oklch(41.7% 0.069 336.8) |
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 #643D5A | 8.90:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #643D5A | 2.35:1 | Fails | Lc 13.7 | Not readable |
| #643D5A text on white | 8.90:1 | AAA | Lc 90.3 | Preferred for body text |
| #643D5A text on black | 2.35:1 | 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
#D2B7CA
oklch(80.8% 0.04 336.6)
-
Step 400
400
#BB92B0
oklch(70.8% 0.064 336.1)
-
Step 500
500
#AA769C
oklch(63.1% 0.083 336.8)
-
Step 600
600
#955E87
oklch(55.6% 0.091 336.6)
-
Step 700
700
#7F4E72
oklch(49.2% 0.083 337.2)
-
Step 800
800 (this color)
#643D5A
oklch(41.7% 0.069 336.8)
-
Step 900
900
#54364C
oklch(37.6% 0.054 336.9)
-
Step 950
950
#31202D
oklch(27% 0.034 335.2)
#643D5A 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) | #3E465B | 0.069 |
| Deuteranopia (no green cones) | #474C59 | 0.064 |
| Tritanopia (no blue cones) | #683E48 | 0.032 |
| Achromatopsia (no color) | #4A4A4A | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643D5A
#643D5A
oklch(41.7% 0.069 336.8)
- #28573D
#28573D
oklch(41.6% 0.068 157.4)
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 #643D5A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.043
- Brownish Purple #76424E ΔE 0.046
- Dusty Grape #545775 ΔE 0.077
- Dark Mauve #874C62 ΔE 0.082
- Dusk #4E5481 ΔE 0.083
- Charcoal Grey #3C4142 ΔE 0.086
- Twilight #4E518B ΔE 0.091
- Velvet #750851 ΔE 0.094
Use #643D5A 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.