#643A69
Closest named color: Brownish Purple (#76424E). oklch(41.8% 0.091 323.1), rgb(100, 58, 105).
Aa
White text reads best on this color (8.93:1).
About this color
#643A69 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.091 and its hue 323°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Brownish Purple (#76424E), ΔE 0.068 away. White text reads best on it, at 8.93:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.091) |
| Temperature | in between |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.35:1 |
| White text | 8.93:1 |
Values
| HEX | #643A69 |
| RGB | rgb(100, 58, 105) |
| HSL | hsl(294, 29%, 32%) |
| OKLCH | oklch(41.8% 0.091 323.1) |
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 #643A69 | 8.93:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #643A69 | 2.35:1 | Fails | Lc 13.7 | Not readable |
| #643A69 text on white | 8.93:1 | AAA | Lc 90.3 | Preferred for body text |
| #643A69 text on black | 2.35:1 | Fails | Lc -12.0 | 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
#EFE7F0
oklch(93.7% 0.015 322.3)
-
Step 200
200
#E3D3E5
oklch(88.5% 0.03 322.4)
-
Step 300
300
#D2B6D5
oklch(81% 0.053 323)
-
Step 400
400
#BB8FC0
oklch(70.8% 0.085 323)
-
Step 500
500
#A972AF
oklch(63% 0.108 323.3)
-
Step 600
600
#945A9B
oklch(55.7% 0.117 323.1)
-
Step 700
700
#7E4984
oklch(49% 0.11 323.3)
-
Step 800
800 (this color)
#643A69
oklch(41.8% 0.091 323.1)
-
Step 900
900
#543457
oklch(37.8% 0.071 323.8)
-
Step 950
950
#311F33
oklch(27.1% 0.044 323.2)
#643A69 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) | #35466B | 0.083 |
| Deuteranopia (no green cones) | #404B68 | 0.075 |
| Tritanopia (no blue cones) | #663F4C | 0.055 |
| Achromatopsia (no color) | #4A4A4A | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643A69
#643A69
oklch(41.8% 0.091 323.1)
- #2B5929
#2B5929
oklch(41.8% 0.092 142.9)
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 #643A69, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.068
- Purple Brown #673A3F ΔE 0.071
- Dark Slate Blue #483D8B ΔE 0.076
- Dusk #4E5481 ΔE 0.078
- Twilight #4E518B ΔE 0.080
- Dusty Grape #545775 ΔE 0.081
- Rebecca Purple #663399 ΔE 0.084
- Grape Purple #5D1451 ΔE 0.088
Use #643A69 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.