#643D5E
Closest named color: Brownish Purple (#76424E). oklch(41.8% 0.073 332.5), rgb(100, 61, 94).
Aa
White text reads best on this color (8.85:1).
About this color
#643D5E is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.073 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 0.050 away. White text reads best on it, at 8.85:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.073) |
| Temperature | in between |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.37:1 |
| White text | 8.85:1 |
Values
| HEX | #643D5E |
| RGB | rgb(100, 61, 94) |
| HSL | hsl(309, 24%, 32%) |
| OKLCH | oklch(41.8% 0.073 332.5) |
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 #643D5E | 8.85:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #643D5E | 2.37:1 | Fails | Lc 13.8 | Not readable |
| #643D5E text on white | 8.85:1 | AAA | Lc 90.1 | Preferred for body text |
| #643D5E text on black | 2.37:1 | Fails | Lc -12.2 | 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
#D2B7CD
oklch(80.9% 0.043 332.2)
-
Step 400
400
#BB91B3
oklch(70.7% 0.068 333)
-
Step 500
500
#A976A1
oklch(63.2% 0.087 332.2)
-
Step 600
600
#945E8C
oklch(55.7% 0.095 332.2)
-
Step 700
700
#7E4D77
oklch(49.1% 0.089 332.1)
-
Step 800
800 (this color)
#643D5E
oklch(41.8% 0.073 332.5)
-
Step 900
900
#54364F
oklch(37.8% 0.058 332.7)
-
Step 950
950
#31202E
oklch(27% 0.035 332.9)
#643D5E 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) | #3C475F | 0.072 |
| Deuteranopia (no green cones) | #464C5D | 0.065 |
| Tritanopia (no blue cones) | #673F49 | 0.038 |
| Achromatopsia (no color) | #4A4A4A | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643D5E
#643D5E
oklch(41.8% 0.073 332.5)
- #2A5839
#2A5839
oklch(41.8% 0.073 152.7)
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 #643D5E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.050
- Purple Brown #673A3F ΔE 0.050
- Dusty Grape #545775 ΔE 0.075
- Dusk #4E5481 ΔE 0.080
- Dark Mauve #874C62 ΔE 0.082
- Twilight #4E518B ΔE 0.087
- Charcoal Grey #3C4142 ΔE 0.090
- Dark Slate Blue #483D8B ΔE 0.091
Use #643D5E 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.