#643B5F
Closest named color: Purple Brown (#673A3F). oklch(41.5% 0.078 331.4), rgb(100, 59, 95).
Aa
White text reads best on this color (9.00:1).
About this color
#643B5F is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.078 and its hue 331°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.053 away. White text reads best on it, at 9.00:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.078) |
| Temperature | in between |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.33:1 |
| White text | 9.00:1 |
Values
| HEX | #643B5F |
| RGB | rgb(100, 59, 95) |
| HSL | hsl(307, 26%, 31%) |
| OKLCH | oklch(41.5% 0.078 331.4) |
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 #643B5F | 9.00:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #643B5F | 2.33:1 | Fails | Lc 13.5 | Not readable |
| #643B5F text on white | 9.00:1 | AAA | Lc 90.5 | Preferred for body text |
| #643B5F text on black | 2.33:1 | Fails | Lc -11.8 | 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
#EFE7EE
oklch(93.6% 0.013 329.6)
-
Step 200
200
#E4D3E1
oklch(88.5% 0.026 331.6)
-
Step 300
300
#D3B6CE
oklch(80.8% 0.046 331.8)
-
Step 400
400
#BC90B5
oklch(70.7% 0.073 331.9)
-
Step 500
500
#AA74A3
oklch(63% 0.093 331.2)
-
Step 600
600
#955C8E
oklch(55.5% 0.101 331.3)
-
Step 700
700
#7F4C79
oklch(49.2% 0.093 331.2)
-
Step 800
800 (this color)
#643B5F
oklch(41.5% 0.078 331.4)
-
Step 900
900
#543550
oklch(37.6% 0.061 331.4)
-
Step 950
950
#311F2F
oklch(26.9% 0.039 330.5)
#643B5F 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) | #3A4560 | 0.075 |
| Deuteranopia (no green cones) | #444B5E | 0.069 |
| Tritanopia (no blue cones) | #673E48 | 0.043 |
| Achromatopsia (no color) | #494949 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643B5F
#643B5F
oklch(41.5% 0.078 331.4)
- #275835
#275835
oklch(41.6% 0.079 150.9)
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 #643B5F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.053
- Brownish Purple #76424E ΔE 0.054
- Dusty Grape #545775 ΔE 0.080
- Dusk #4E5481 ΔE 0.083
- Dark Mauve #874C62 ΔE 0.086
- Twilight #4E518B ΔE 0.088
- Velvet #750851 ΔE 0.089
- Grape Purple #5D1451 ΔE 0.089
Use #643B5F 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.