#643D67
Closest named color: Brownish Purple (#76424E). oklch(42.3% 0.083 324.4), rgb(100, 61, 103).
Aa
White text reads best on this color (8.73:1).
About this color
#643D67 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.083 and its hue 324°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Brownish Purple (#76424E), ΔE 0.060 away. White text reads best on it, at 8.73:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.083) |
| Temperature | in between |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.40:1 |
| White text | 8.73:1 |
Values
| HEX | #643D67 |
| RGB | rgb(100, 61, 103) |
| HSL | hsl(296, 26%, 32%) |
| OKLCH | oklch(42.3% 0.083 324.4) |
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 #643D67 | 8.73:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #643D67 | 2.40:1 | Fails | Lc 14.2 | Not readable |
| #643D67 text on white | 8.73:1 | AAA | Lc 89.8 | Fine for body text |
| #643D67 text on black | 2.40:1 | Fails | Lc -12.5 | 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
#F8F4F8
oklch(97.1% 0.007 325.6)
-
Step 100
100
#EFE7EF
oklch(93.7% 0.014 325.7)
-
Step 200
200
#E3D3E3
oklch(88.5% 0.028 325.8)
-
Step 300
300
#D1B6D2
oklch(80.8% 0.049 324.9)
-
Step 400
400
#B990BC
oklch(70.6% 0.078 324.1)
-
Step 500
500
#A774AB
oklch(63% 0.099 324.2)
-
Step 600
600
#925C96
oklch(55.5% 0.107 324.5)
-
Step 700
700
#7C4B80
oklch(48.9% 0.1 324.3)
-
Step 800
800 (this color)
#643D67
oklch(42.3% 0.083 324.4)
-
Step 900
900
#533555
oklch(37.7% 0.066 324.6)
-
Step 950
950
#301F32
oklch(26.9% 0.042 323)
#643D67 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) | #394869 | 0.076 |
| Deuteranopia (no green cones) | #434D66 | 0.069 |
| Tritanopia (no blue cones) | #66414D | 0.049 |
| Achromatopsia (no color) | #4B4B4B | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643D67
#643D67
oklch(42.3% 0.083 324.4)
- #2F5930
#2F5930
oklch(42.2% 0.081 144.5)
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 #643D67, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.060
- Purple Brown #673A3F ΔE 0.065
- Dusty Grape #545775 ΔE 0.073
- Dusk #4E5481 ΔE 0.074
- Twilight #4E518B ΔE 0.077
- Dark Slate Blue #483D8B ΔE 0.079
- Dark Mauve #874C62 ΔE 0.084
- Light Eggplant #894585 ΔE 0.088
Use #643D67 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.