#643B5D
Closest named color: Purple Brown (#673A3F). oklch(41.4% 0.076 333.3), rgb(100, 59, 93).
Aa
White text reads best on this color (9.03:1).
About this color
#643B5D is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.076 and its hue 333°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.050 away. White text reads best on it, at 9.03:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.076) |
| Temperature | in between |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.32:1 |
| White text | 9.03:1 |
Values
| HEX | #643B5D |
| RGB | rgb(100, 59, 93) |
| HSL | hsl(310, 26%, 31%) |
| OKLCH | oklch(41.4% 0.076 333.3) |
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 #643B5D | 9.03:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #643B5D | 2.32:1 | Fails | Lc 13.4 | Not readable |
| #643B5D text on white | 9.03:1 | AAA | Lc 90.6 | Preferred for body text |
| #643B5D text on black | 2.32:1 | Fails | Lc -11.7 | 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
#E4D3E0
oklch(88.4% 0.026 333.8)
-
Step 300
300
#D3B6CD
oklch(80.8% 0.045 333.1)
-
Step 400
400
#BC90B4
oklch(70.6% 0.072 332.7)
-
Step 500
500
#AB74A1
oklch(63% 0.092 333.3)
-
Step 600
600
#965C8C
oklch(55.6% 0.1 333.3)
-
Step 700
700
#804C77
oklch(49.2% 0.092 333.4)
-
Step 800
800 (this color)
#643B5D
oklch(41.4% 0.076 333.3)
-
Step 900
900
#55354F
oklch(37.7% 0.061 333.7)
-
Step 950
950
#321F2E
oklch(27% 0.039 334.4)
#643B5D 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) | #3A455E | 0.075 |
| Deuteranopia (no green cones) | #454B5C | 0.068 |
| Tritanopia (no blue cones) | #683D48 | 0.039 |
| Achromatopsia (no color) | #494949 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643B5D
#643B5D
oklch(41.4% 0.076 333.3)
- #265737
#265737
oklch(41.3% 0.076 153)
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 #643B5D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.050
- Brownish Purple #76424E ΔE 0.052
- Dusty Grape #545775 ΔE 0.080
- Dusk #4E5481 ΔE 0.084
- Dark Mauve #874C62 ΔE 0.086
- Velvet #750851 ΔE 0.089
- Grape Purple #5D1451 ΔE 0.089
- Twilight #4E518B ΔE 0.090
Use #643B5D 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.