#643B5A
Closest named color: Purple Brown (#673A3F). oklch(41.3% 0.073 336.4), rgb(100, 59, 90).
Aa
White text reads best on this color (9.07:1).
About this color
#643B5A is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.073 and its hue 336°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.045 away. White text reads best on it, at 9.07:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.073) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.31:1 |
| White text | 9.07:1 |
Values
| HEX | #643B5A |
| RGB | rgb(100, 59, 90) |
| HSL | hsl(315, 26%, 31%) |
| OKLCH | oklch(41.3% 0.073 336.4) |
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 #643B5A | 9.07:1 | AAA | Lc -95.1 | Preferred for body text |
| Black text on #643B5A | 2.31:1 | Fails | Lc 13.3 | Not readable |
| #643B5A text on white | 9.07:1 | AAA | Lc 90.7 | Preferred for body text |
| #643B5A text on black | 2.31:1 | Fails | Lc -11.6 | 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
#F0E7ED
oklch(93.7% 0.013 337.5)
-
Step 200
200
#E4D3DF
oklch(88.4% 0.025 336.1)
-
Step 300
300
#D3B7CB
oklch(80.9% 0.042 336.2)
-
Step 400
400
#BD91B1
oklch(70.8% 0.068 336.4)
-
Step 500
500
#AB759D
oklch(63.1% 0.087 336.4)
-
Step 600
600
#965D88
oklch(55.6% 0.095 336.3)
-
Step 700
700
#804C73
oklch(49% 0.089 336.7)
-
Step 800
800 (this color)
#643B5A
oklch(41.3% 0.073 336.4)
-
Step 900
900
#55364D
oklch(37.8% 0.056 336.6)
-
Step 950
950
#32202D
oklch(27.1% 0.035 337.2)
#643B5A 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) | #3C455B | 0.073 |
| Deuteranopia (no green cones) | #464B59 | 0.067 |
| Tritanopia (no blue cones) | #683C46 | 0.036 |
| Achromatopsia (no color) | #494949 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643B5A
#643B5A
oklch(41.3% 0.073 336.4)
- #24573A
#24573A
oklch(41.3% 0.074 156.1)
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 #643B5A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.045
- Brownish Purple #76424E ΔE 0.049
- Dusty Grape #545775 ΔE 0.081
- Dark Mauve #874C62 ΔE 0.086
- Dusk #4E5481 ΔE 0.087
- Charcoal Grey #3C4142 ΔE 0.088
- Velvet #750851 ΔE 0.089
- Grape Purple #5D1451 ΔE 0.089
Use #643B5A 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.