#643E5A
Closest named color: Purple Brown (#673A3F). oklch(41.8% 0.067 337), rgb(100, 62, 90).
Aa
White text reads best on this color (8.82:1).
About this color
#643E5A is a dark, muted purple. In OKLCH its lightness is 42%, its chroma 0.067 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 8.82:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | muted (0.067) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.37:1 |
| White text | 8.82:1 |
Values
| HEX | #643E5A |
| RGB | rgb(100, 62, 90) |
| HSL | hsl(316, 23%, 32%) |
| OKLCH | oklch(41.8% 0.067 337) |
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 #643E5A | 8.82:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #643E5A | 2.37:1 | Fails | Lc 13.9 | Not readable |
| #643E5A text on white | 8.82:1 | AAA | Lc 90.1 | Preferred for body text |
| #643E5A text on black | 2.37:1 | Fails | Lc -12.2 | 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
#F8F4F7
oklch(97.1% 0.006 334)
-
Step 100
100
#EFE7ED
oklch(93.6% 0.012 334.1)
-
Step 200
200
#E3D4DE
oklch(88.5% 0.021 337.7)
-
Step 300
300
#D2B7CA
oklch(80.8% 0.04 336.6)
-
Step 400
400
#BB92AF
oklch(70.7% 0.063 337.1)
-
Step 500
500
#A9779B
oklch(63.1% 0.079 337.2)
-
Step 600
600
#945F86
oklch(55.6% 0.087 337)
-
Step 700
700
#7E4E71
oklch(49.1% 0.081 337.4)
-
Step 800
800 (this color)
#643E5A
oklch(41.8% 0.067 337)
-
Step 900
900
#54374C
oklch(37.8% 0.052 337.2)
-
Step 950
950
#31202C
oklch(26.9% 0.033 337.8)
#643E5A 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) | #3F475B | 0.067 |
| Deuteranopia (no green cones) | #484C59 | 0.061 |
| Tritanopia (no blue cones) | #683F48 | 0.032 |
| Achromatopsia (no color) | #4A4A4A | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643E5A
#643E5A
oklch(41.8% 0.067 337)
- #2A583E
#2A583E
oklch(42% 0.067 157)
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 #643E5A, 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 0.044
- Dusty Grape #545775 ΔE 0.075
- Dark Mauve #874C62 ΔE 0.081
- Dusk #4E5481 ΔE 0.082
- Charcoal Grey #3C4142 ΔE 0.086
- Twilight #4E518B ΔE 0.090
- YInMn Blue #415A77 ΔE 0.093
Use #643E5A 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.