#643C5C
Closest named color: Purple Brown (#673A3F). oklch(41.6% 0.073 334.4), rgb(100, 60, 92).
Aa
White text reads best on this color (8.96:1).
About this color
#643C5C is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.073 and its hue 334°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.047 away. White text reads best on it, at 8.96:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.073) |
| Temperature | in between |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.34:1 |
| White text | 8.96:1 |
Values
| HEX | #643C5C |
| RGB | rgb(100, 60, 92) |
| HSL | hsl(312, 25%, 31%) |
| OKLCH | oklch(41.6% 0.073 334.4) |
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 #643C5C | 8.96:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #643C5C | 2.34:1 | Fails | Lc 13.6 | Not readable |
| #643C5C text on white | 8.96:1 | AAA | Lc 90.4 | Preferred for body text |
| #643C5C text on black | 2.34:1 | Fails | Lc -11.9 | 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
#E4D4E0
oklch(88.6% 0.024 334.3)
-
Step 300
300
#D3B7CC
oklch(81% 0.043 334.7)
-
Step 400
400
#BC91B2
oklch(70.7% 0.068 334.7)
-
Step 500
500
#AA759F
oklch(63% 0.088 334.2)
-
Step 600
600
#955D8A
oklch(55.5% 0.095 334.2)
-
Step 700
700
#7F4D75
oklch(49.2% 0.088 334.5)
-
Step 800
800 (this color)
#643C5C
oklch(41.6% 0.073 334.4)
-
Step 900
900
#54364E
oklch(37.7% 0.056 334.1)
-
Step 950
950
#31202E
oklch(27% 0.035 332.9)
#643C5C 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) | #3C465D | 0.072 |
| Deuteranopia (no green cones) | #464B5B | 0.065 |
| Tritanopia (no blue cones) | #683E48 | 0.037 |
| Achromatopsia (no color) | #494949 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643C5C
#643C5C
oklch(41.6% 0.073 334.4)
- #27573A
#27573A
oklch(41.4% 0.072 155)
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 #643C5C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.047
- Brownish Purple #76424E ΔE 0.049
- Dusty Grape #545775 ΔE 0.078
- Dusk #4E5481 ΔE 0.083
- Dark Mauve #874C62 ΔE 0.084
- Charcoal Grey #3C4142 ΔE 0.089
- Twilight #4E518B ΔE 0.090
- Velvet #750851 ΔE 0.091
Use #643C5C 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.