#643760
Closest named color: Purple Brown (#673A3F). oklch(40.8% 0.087 330.3), rgb(100, 55, 96).
Aa
White text reads best on this color (9.30:1).
About this color
#643760 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.087 and its hue 330°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.059 away. White text reads best on it, at 9.30:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.087) |
| Temperature | in between |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.25:1 |
| White text | 9.30:1 |
Values
| HEX | #643760 |
| RGB | rgb(100, 55, 96) |
| HSL | hsl(305, 29%, 30%) |
| OKLCH | oklch(40.8% 0.087 330.3) |
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 #643760 | 9.30:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #643760 | 2.25:1 | Fails | Lc 12.7 | Not readable |
| #643760 text on white | 9.30:1 | AAA | Lc 91.2 | Preferred for body text |
| #643760 text on black | 2.25:1 | Fails | Lc -11.1 | 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
#F0E6EE
oklch(93.5% 0.015 332.2)
-
Step 200
200
#E5D3E2
oklch(88.6% 0.028 331.2)
-
Step 300
300
#D4B5D0
oklch(80.8% 0.051 330.3)
-
Step 400
400
#BE8EB9
oklch(70.6% 0.082 330)
-
Step 500
500
#AD72A7
oklch(63.2% 0.103 330.3)
-
Step 600
600
#985992
oklch(55.6% 0.113 330.5)
-
Step 700
700
#82497D
oklch(49.2% 0.105 330.3)
-
Step 800
800 (this color)
#643760
oklch(40.8% 0.087 330.3)
-
Step 900
900
#563452
oklch(37.8% 0.067 331.1)
-
Step 950
950
#321E30
oklch(26.8% 0.043 330.2)
#643760 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) | #354361 | 0.085 |
| Deuteranopia (no green cones) | #41495F | 0.076 |
| Tritanopia (no blue cones) | #673A47 | 0.046 |
| Achromatopsia (no color) | #474747 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643760
#643760
oklch(40.8% 0.087 330.3)
- #205730
#205730
oklch(40.9% 0.087 150.3)
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 #643760, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.059
- Brownish Purple #76424E ΔE 0.063
- Grape Purple #5D1451 ΔE 0.079
- Velvet #750851 ΔE 0.080
- Rich Purple #720058 ΔE 0.085
- Dark Slate Blue #483D8B ΔE 0.087
- Dusty Grape #545775 ΔE 0.089
- Dusk #4E5481 ΔE 0.089
Use #643760 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.