#643563
Closest named color: Purple Brown (#673A3F). oklch(40.7% 0.094 327.9), rgb(100, 53, 99).
Aa
White text reads best on this color (9.41:1).
About this color
#643563 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.094 and its hue 328°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.067 away. White text reads best on it, at 9.41:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.094) |
| Temperature | in between |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.23:1 |
| White text | 9.41:1 |
Values
| HEX | #643563 |
| RGB | rgb(100, 53, 99) |
| HSL | hsl(301, 31%, 30%) |
| OKLCH | oklch(40.7% 0.094 327.9) |
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 #643563 | 9.41:1 | AAA | Lc -95.8 | Preferred for body text |
| Black text on #643563 | 2.23:1 | Fails | Lc 12.5 | Not readable |
| #643563 text on white | 9.41:1 | AAA | Lc 91.5 | Preferred for body text |
| #643563 text on black | 2.23:1 | Fails | Lc -10.9 | 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
#F8F4F8
oklch(97.1% 0.007 325.6)
-
Step 100
100
#F0E6EF
oklch(93.5% 0.016 328.8)
-
Step 200
200
#E5D2E4
oklch(88.5% 0.032 327.4)
-
Step 300
300
#D5B5D3
oklch(81% 0.054 328)
-
Step 400
400
#BF8DBD
oklch(70.7% 0.089 327.8)
-
Step 500
500
#AE70AC
oklch(63.1% 0.112 327.9)
-
Step 600
600
#995797
oklch(55.6% 0.122 328.2)
-
Step 700
700
#824781
oklch(49.1% 0.113 327.7)
-
Step 800
800 (this color)
#643563
oklch(40.7% 0.094 327.9)
-
Step 900
900
#563355
oklch(37.7% 0.072 327.9)
-
Step 950
950
#331E32
oklch(27.1% 0.047 328.4)
#643563 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) | #324265 | 0.090 |
| Deuteranopia (no green cones) | #3F4862 | 0.080 |
| Tritanopia (no blue cones) | #673947 | 0.053 |
| Achromatopsia (no color) | #464646 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643563
#643563
oklch(40.7% 0.094 327.9)
- #1E572A
#1E572A
oklch(40.7% 0.094 147.8)
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 #643563, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.067
- Brownish Purple #76424E ΔE 0.070
- Grape Purple #5D1451 ΔE 0.074
- Velvet #750851 ΔE 0.076
- Rich Purple #720058 ΔE 0.080
- Dark Slate Blue #483D8B ΔE 0.084
- Red Purple #820747 ΔE 0.089
- Rebecca Purple #663399 ΔE 0.091
Use #643563 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.