#643F5F
Closest named color: Brownish Purple (#76424E). oklch(42.3% 0.07 331.6), rgb(100, 63, 95).
Aa
White text reads best on this color (8.68:1).
About this color
#643F5F is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.070 and its hue 332°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Brownish Purple (#76424E), ΔE 0.048 away. White text reads best on it, at 8.68:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.070) |
| Temperature | in between |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.41:1 |
| White text | 8.68:1 |
Values
| HEX | #643F5F |
| RGB | rgb(100, 63, 95) |
| HSL | hsl(308, 23%, 32%) |
| OKLCH | oklch(42.3% 0.07 331.6) |
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 #643F5F | 8.68:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #643F5F | 2.41:1 | Fails | Lc 14.3 | Not readable |
| #643F5F text on white | 8.68:1 | AAA | Lc 89.7 | Fine for body text |
| #643F5F text on black | 2.41:1 | Fails | Lc -12.6 | 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
#E3D4E0
oklch(88.6% 0.023 332.4)
-
Step 300
300
#D1B7CD
oklch(80.8% 0.042 331)
-
Step 400
400
#B992B3
oklch(70.7% 0.065 331.5)
-
Step 500
500
#A777A0
oklch(63.1% 0.082 331.7)
-
Step 600
600
#925F8B
oklch(55.6% 0.09 331.7)
-
Step 700
700
#7C4E76
oklch(49% 0.084 331.5)
-
Step 800
800 (this color)
#643F5F
oklch(42.3% 0.07 331.6)
-
Step 900
900
#53374F
oklch(37.8% 0.054 331.7)
-
Step 950
950
#30202E
oklch(26.9% 0.034 330.8)
#643F5F 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) | #3E4860 | 0.068 |
| Deuteranopia (no green cones) | #474D5E | 0.062 |
| Tritanopia (no blue cones) | #67414B | 0.036 |
| Achromatopsia (no color) | #4B4B4B | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643F5F
#643F5F
oklch(42.3% 0.07 331.6)
- #2E593A
#2E593A
oklch(42.3% 0.071 151.4)
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 #643F5F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.048
- Purple Brown #673A3F ΔE 0.051
- Dusty Grape #545775 ΔE 0.070
- Dusk #4E5481 ΔE 0.076
- Dark Mauve #874C62 ΔE 0.079
- Twilight #4E518B ΔE 0.083
- YInMn Blue #415A77 ΔE 0.089
- Charcoal Grey #3C4142 ΔE 0.090
Use #643F5F 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.