#643669
Closest named color: Brownish Purple (#76424E). oklch(41.1% 0.099 323.5), rgb(100, 54, 105).
Aa
White text reads best on this color (9.23:1).
About this color
#643669 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.099 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 0.074 away. White text reads best on it, at 9.23:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.099) |
| Temperature | in between |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.27:1 |
| White text | 9.23:1 |
Values
| HEX | #643669 |
| RGB | rgb(100, 54, 105) |
| HSL | hsl(294, 32%, 31%) |
| OKLCH | oklch(41.1% 0.099 323.5) |
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 #643669 | 9.23:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #643669 | 2.27:1 | Fails | Lc 12.9 | Not readable |
| #643669 text on white | 9.23:1 | AAA | Lc 91.0 | Preferred for body text |
| #643669 text on black | 2.27:1 | Fails | Lc -11.3 | 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
#F0E6F0
oklch(93.6% 0.017 325.7)
-
Step 200
200
#E4D2E5
oklch(88.4% 0.032 324.3)
-
Step 300
300
#D4B5D6
oklch(81% 0.057 324.2)
-
Step 400
400
#BD8DC2
oklch(70.7% 0.093 323.3)
-
Step 500
500
#AC70B2
oklch(63.2% 0.117 323.6)
-
Step 600
600
#97579E
oklch(55.7% 0.128 323.5)
-
Step 700
700
#814687
oklch(49.1% 0.12 323.7)
-
Step 800
800 (this color)
#643669
oklch(41.1% 0.099 323.5)
-
Step 900
900
#553259
oklch(37.6% 0.078 323.3)
-
Step 950
950
#321E34
oklch(27% 0.048 323.6)
#643669 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) | #30446B | 0.092 |
| Deuteranopia (no green cones) | #3D4967 | 0.082 |
| Tritanopia (no blue cones) | #663C4A | 0.060 |
| Achromatopsia (no color) | #474747 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643669
#643669
oklch(41.1% 0.099 323.5)
- #245824
#245824
oklch(41.1% 0.099 143.5)
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 #643669, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.074
- Purple Brown #673A3F ΔE 0.075
- Dark Slate Blue #483D8B ΔE 0.076
- Grape Purple #5D1451 ΔE 0.079
- Velvet #750851 ΔE 0.081
- Rebecca Purple #663399 ΔE 0.081
- Rich Purple #720058 ΔE 0.083
- Twilight #4E518B ΔE 0.087
Use #643669 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.